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www.cyfrin.io
198.202.211.1  Public Scan Open in urlscan Pro

Go To Rescan Add Verdict Report
Submitted URL: https://cyfrin.io/ 3yr old
Effective URL: https://www.cyfrin.io/ 3yr old
Submission: On April 14 via api from FI — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 16 IPs in 3 countries across 14 domains to perform 71 HTTP transactions. The main IP is 198.202.211.1, located in United States and belongs to CLOUDFLARESPECTRUM Cloudflare London, LLC, US. The main domain is www.cyfrin.io. 3yr old
TLS certificate: Issued by WE1 on April 5th 2026. Valid for: 3mo.
This is the only time www.cyfrin.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 1 2620:cb:2000::1 13335 (CLOUDFLAR...)
2 198.202.211.1 209242 (CLOUDFLAR...)
55 104.18.160.117 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
1 13.226.247.220 16509 (AMAZON-02)
1 172.64.151.115 13335 (CLOUDFLAR...)
1 2a00:1450:400... 15169 (GOOGLE)
1 146.75.120.157 54113 (FASTLY)
1 2600:9000:223... 16509 (AMAZON-02)
1 172.66.0.227 13335 (CLOUDFLAR...)
1 162.159.140.229 13335 (CLOUDFLAR...)
1 142.251.110.94 15169 (GOOGLE)
1 2a00:1450:400... 15169 (GOOGLE)
1 2001:4860:480... 15169 (GOOGLE)
1 142.251.153.119 15169 (GOOGLE)
1 3 104.18.95.41 13335 (CLOUDFLAR...)
71 16
1    2620:cb:2000::1 (United States)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
cyfrin.io 3yr old
2    198.202.211.1 (United States)

ASN209242 (CLOUDFLARESPECTRUM Cloudflare London, LLC, US)
www.cyfrin.io 3yr old
55    104.18.160.117 (Ascension Island)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
cdn.prod.website-files.com 3yr old
1    2a00:1450:4001:c25::5f (Frankfurt am Main, Germany)

ASN15169 (GOOGLE - Google LLC, US)
ajax.googleapis.com 9yr old
1    13.226.247.220 (United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
PTR: server-13-226-247-220.fra56.r.cloudfront.net
d3e54v103j8qbb.cloudfront.net 9yr old
1    172.64.151.115 (Ascension Island)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
rwj69h.csb.app 2yr old
1    2a00:1450:4001:c13::5f (Frankfurt am Main, Germany)

ASN15169 (GOOGLE - Google LLC, US)
fonts.googleapis.com 56yr old
1    146.75.120.157 (Frankfurt am Main, Germany)

ASN54113 (FASTLY - Fastly, Inc., US)
static.ads-twitter.com 10yr old
1    2600:9000:223e:de00:1d:7a82:2900:93a1 (United States)

ASN16509 (AMAZON-02 - Amazon.com, Inc., US)
cdn.jetboost.io 6yr old
1    172.66.0.227 (Ascension Island)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
t.co 13yr old
1    162.159.140.229 (Ascension Island)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
analytics.twitter.com 9yr old
1    142.251.110.94 (United States)

ASN15169 (GOOGLE - Google LLC, US)
PTR: bz-in-f94.1e100.net
fonts.gstatic.com 9yr old
1    2a00:1450:4001:c17::61 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE - Google LLC, US)
www.googletagmanager.com 56yr old
1    2001:4860:4802:34::36 (United States)

ASN15169 (GOOGLE - Google LLC, US)
region1.google-analytics.com 5yr old
1    142.251.153.119 (United States)

ASN15169 (GOOGLE - Google LLC, US)
www.google.com 56yr old
3    104.18.95.41 (Ascension Island)

ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US)
challenges.cloudflare.com 5yr old
Apex Domain
Subdomains		 Transfer
55 website-files.com
cdn.prod.website-files.com — Cisco Umbrella Rank: 7435 3yr old
885 KB
3 cloudflare.com
challenges.cloudflare.com — Cisco Umbrella Rank: 1187 5yr old
18 KB
3 cyfrin.io
cyfrin.io 3yr old
www.cyfrin.io 3yr old
248 KB
2 googleapis.com
ajax.googleapis.com — Cisco Umbrella Rank: 683 9yr old
fonts.googleapis.com — Cisco Umbrella Rank: 79 56yr old
7 KB
1 google.com
www.google.com — Cisco Umbrella Rank: 3 56yr old
1 google-analytics.com
region1.google-analytics.com — Cisco Umbrella Rank: 3693 5yr old
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 64 56yr old
392 B
1 gstatic.com
fonts.gstatic.com — Cisco Umbrella Rank: 56 9yr old
47 KB
1 twitter.com
analytics.twitter.com — Cisco Umbrella Rank: 1192 9yr old
1005 B
1 t.co
t.co — Cisco Umbrella Rank: 959 13yr old
660 B
1 jetboost.io
cdn.jetboost.io — Cisco Umbrella Rank: 118968 6yr old
5 KB
1 ads-twitter.com
static.ads-twitter.com — Cisco Umbrella Rank: 1213 10yr old
13 KB
1 csb.app
rwj69h.csb.app 2yr old
452 B
1 cloudfront.net
d3e54v103j8qbb.cloudfront.net — Cisco Umbrella Rank: 8699 9yr old
30 KB
71 14
Domain Requested by
55 cdn.prod.website-files.com www.cyfrin.io
cdn.prod.website-files.com
3 challenges.cloudflare.com 1 redirects www.cyfrin.io
challenges.cloudflare.com
2 www.cyfrin.io www.cyfrin.io
1 www.google.com www.cyfrin.io
1 region1.google-analytics.com www.cyfrin.io
1 www.googletagmanager.com www.cyfrin.io
1 fonts.gstatic.com fonts.googleapis.com
1 analytics.twitter.com www.cyfrin.io
1 t.co www.cyfrin.io
1 cdn.jetboost.io www.cyfrin.io
1 static.ads-twitter.com www.cyfrin.io
1 fonts.googleapis.com ajax.googleapis.com
1 rwj69h.csb.app www.cyfrin.io
1 d3e54v103j8qbb.cloudfront.net www.cyfrin.io
1 ajax.googleapis.com www.cyfrin.io
1 cyfrin.io 1 redirects
71 16
Subject Issuer Validity Valid
www.cyfrin.io
WE1		 2026-04-05 -
2026-07-04		 3mo crt.sh
prod.website-files.com
WE1		 2026-04-06 -
2026-07-05		 3mo crt.sh
upload.video.google.com
WE2		 2026-03-23 -
2026-06-15		 3mo crt.sh
*.cloudfront.net
Amazon RSA 2048 M01		 2026-02-24 -
2026-09-09		 7mo crt.sh
csb.app
WE1		 2026-03-13 -
2026-06-11		 3mo crt.sh
ads-twitter.com
R12		 2026-03-17 -
2026-06-15		 3mo crt.sh
cdn.jetboost.io
Amazon RSA 2048 M01		 2026-01-18 -
2027-02-15		 1yr crt.sh
t.co
E8		 2026-03-13 -
2026-06-11		 3mo crt.sh
twitter.com
E7		 2026-03-30 -
2026-06-28		 3mo crt.sh
*.gstatic.com
WE2		 2026-03-23 -
2026-06-15		 3mo crt.sh
*.google-analytics.com
WE2		 2026-03-23 -
2026-06-15		 3mo crt.sh
*.google.com
WE2		 2026-03-23 -
2026-06-15		 3mo crt.sh
challenges.cloudflare.com
WE1		 2026-02-18 -
2026-05-19		 3mo crt.sh

This page contains 2 frames:

Primary Page: https://www.cyfrin.io/
Frame ID: E7D8A7A39DEA1A99BDA1A0FBBEC45165
Requests: 71 HTTP requests in this frame

Frame: https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/mx5b5/0x4AAAAAAAQTptj2So4dx43e/auto/fbE/new/normal?lang=auto
Frame ID: EBB27F9B65F2FA57084AA28B9EF665A5
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Blockchain Security, Smart Contract Audits, Developer Education - Cyfrin

Page URL History Show full URLs

  1. https://cyfrin.io/ HTTP 301
    https://www.cyfrin.io/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • googleapis\.com/.+webfont
Overall confidence: 100%
Detected patterns
  • \.googletagmanager\.com/
Overall confidence: 100%
Detected patterns
  • jquery
  • /jquery(?:-(\d+\.\d+\.\d+))[/.-]
Overall confidence: 100%
Detected patterns
  • ajax\.googleapis\.com/ajax/libs/
Overall confidence: 100%
Detected patterns
  • static\.ads-twitter\.com/uwt\.js
Overall confidence: 100%
Detected patterns
  • analytics\.twitter\.com

Page Statistics

71
Requests

99 %
HTTPS

38 %
IPv6

14
Domains

16
Subdomains

16
IPs

3
Countries

1258 kB
Transfer

2882 kB
Size

13
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. https://cyfrin.io/ HTTP 301
    https://www.cyfrin.io/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 68
  • https://challenges.cloudflare.com/turnstile/v0/api.js HTTP 302
  • https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.js

71 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
www.cyfrin.io/
Redirect Chain
  • https://cyfrin.io/
  • https://www.cyfrin.io/
248 KB
62 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
198.202.211.1 , United States, ASN209242 (CLOUDFLARESPECTRUM Cloudflare London, LLC, US),
Reverse DNS
Software
cloudflare /
Resource Hash
7cbf32cf4082832019d378fc773a9e1dcee360d7df398fe38c0cf2b8128cc7ee
Security Headers
Name Value
Strict-Transport-Security max-age=31536000

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0
sec-ch-ua-platform
"Linux"

Response headers

alt-svc
h3=":443"; ma=86400
cf-cache-status
HIT
cf-ray
9ec1d3768be5c7fe-DUS
content-encoding
gzip
content-type
text/html; charset=utf-8
date
Tue, 14 Apr 2026 09:53:53 GMT
last-modified
Tue, 14 Apr 2026 09:06:48 GMT
priority
u=0,i
server
cloudflare
server-timing
cfExtPri
strict-transport-security
max-age=31536000
surrogate-control
max-age=432000
surrogate-key
www.cyfrin.io 657ba316d2b6a27c7d778152 pageId:657ba316d2b6a27c7d778155 65c3d7fe78aff66ac88ca985 659f0982212ea617bf0dc731 659ddeb717a9830ed6cb6061 65e1fde6606c3ea68cb65b17 659eda25cd5cc70ef68ad986
vary
Accept-Encoding
x-lambda-id
9ba17c15-9dc0-49f4-b5db-67f4b26960d0
x-wf-region
us-east-1

Redirect headers

alt-svc
h3=":443"; ma=86400
cache-control
private
cf-cache-status
BYPASS
cf-ray
9ec1d3748fb83a11-DUS
content-length
166
content-type
text/html
date
Tue, 14 Apr 2026 09:53:53 GMT
location
https://www.cyfrin.io/
server
cloudflare
strict-transport-security
max-age=31536000
vary
Accept-Encoding
x-wf-region
us-east-1
cyfrin-2-0.shared.599cffe0e.css
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/ 		616 KB
78 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/cyfrin-2-0.shared.599cffe0e.css
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
ab3ab0200ba7118ff4c08174ec46a15cd44d7b3481b7334a650dfb03fc41e0f6

Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
content-encoding
br
cf-cache-status
HIT
etag
W/"9b1192ae8359fed25956f70959529fcf"
x-amz-version-id
R3rwpfHKfyXdWeD.AAXy385f.l5YwJSS
age
1257260
access-control-allow-methods
GET, HEAD
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
text/css
vary
Origin, Access-Control-Request-Headers, Access-Control-Request-Method, Accept-Encoding
priority
u=0,i=?0
x-amz-id-2
QJfzo2tnVZeRvvXTZ8jdnbuOEG9QuhYKIwC5vS0iwGA6tpqAIr8ltMLUqnyM6maGJDf9g4vNoZuE9YeJM6IDbc/fvQtGfQgrK7msepqNq7c=
last-modified
Mon, 30 Mar 2026 20:39:18 GMT
cache-control
public, max-age=31536000, immutable
x-amz-request-id
NJ1MV35AXFB1HZW7
cf-ray
9ec1d377a800f948-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
webfont.js
ajax.googleapis.com/ajax/libs/webfont/1.6.26/ 		13 KB
6 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2a00:1450:4001:c25::5f Frankfurt am Main, Germany, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
Software
sffe /
Resource Hash
81016ac6be850b72df5d4faa0c3cec8e2c1b0ba0045712144a6766adfad40bee
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
gzip
age
148133
report-to
{"group":"hosted-libraries-pushers","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/hosted-libraries-pushers"}]}
x-content-type-options
nosniff
expires
Mon, 12 Apr 2027 16:45:00 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Sun, 12 Apr 2026 16:45:00 GMT
last-modified
Tue, 03 Mar 2020 19:15:00 GMT
content-type
text/javascript; charset=UTF-8
vary
Accept-Encoding
cache-control
public, max-age=31536000, stale-while-revalidate=2592000
timing-allow-origin
*
cross-origin-opener-policy
same-origin; report-to="hosted-libraries-pushers"
cross-origin-resource-policy
cross-origin
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/hosted-libraries-pushers
accept-ranges
bytes
access-control-allow-origin
*
content-length
5437
x-xss-protection
0
server
sffe
FFAXpGEpiGhBCJaI7-adGAwzGBI
www.cyfrin.io/haqt6iy0yx2eNjU3YmEzMTZkMmI2YTI3YzdkNzc4MTUy/ 		584 KB
185 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.cyfrin.io/haqt6iy0yx2eNjU3YmEzMTZkMmI2YTI3YzdkNzc4MTUy/FFAXpGEpiGhBCJaI7-adGAwzGBI
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
198.202.211.1 , United States, ASN209242 (CLOUDFLARESPECTRUM Cloudflare London, LLC, US),
Reverse DNS
Software
cloudflare /
Resource Hash
f6505590dfaa0fe6851ee99b6646c6916dd2f800a7ad8ae0ce19bf0d177aadbe

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
gzip
cf-cache-status
BYPASS
expires
Tue, 14 Apr 2026 09:53:54 GMT
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
application/javascript; charset=UTF-8
vary
Accept-Encoding
priority
u=3,i=?0
access-control-allow-headers
Cache-Control
cache-control
private, max-age=900
cross-origin-resource-policy
cross-origin
cf-ray
9ec1d3783d2bc7fe-DUS
accept-ranges
bytes
content-length
189043
server
cloudflare
657bab1720f464b5e0de46d6_nav-image-06.jpg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		18 KB
19 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/657bab1720f464b5e0de46d6_nav-image-06.jpg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
7953410584f104bacb5ed82f47c4ddf362477c76cfb5a6a600c0fbaf23213974

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-bgj
h2pri
etag
"e3dd8963299380ef6760d8a89229edea"
x-amz-version-id
WiBTMDOCtS2x7L3jAdPvzzM0dAJH568y
cf-cache-status
HIT
age
216683
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
image/jpeg
last-modified
Fri, 15 Dec 2023 01:25:44 GMT
vary
Accept-Encoding
priority
u=2,i
x-amz-id-2
RvneNf/r/Y5ENPxkiER1DJT7F+/PuXhN+xZlQyPZzMcgzlTxGuBExp44RNSuyTY+A+lez1vSSxU=
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d377bf647a48-DUS
x-amz-request-id
XRT88W0MZE7BVQ6N
accept-ranges
bytes
access-control-allow-origin
*
content-length
18750
server
cloudflare
x-amz-server-side-encryption
AES256
657bab1720f464b5e0de46cf_image-06.jpeg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		65 KB
65 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/657bab1720f464b5e0de46cf_image-06.jpeg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
f1794ad103e8802cd53150b69a22cc3696135bbb947eeac1d177e803ba345ee5

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"a8e049739cad6b4cdce9e49e03620f27"
x-amz-version-id
K4jJ49_OSrBLRENrL60eRD5g5kYx8vwZ
age
14192894
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
image/jpeg
last-modified
Fri, 15 Dec 2023 01:25:44 GMT
vary
Accept-Encoding
priority
u=2,i
x-amz-id-2
YWHGC+lROdxFA+ACurrbq6kILfXLcwf+9yb+oymK6ma/UY0lU6Tgvj4eFo4CzhxZCCSVeK7jTP8aKnGTEYSkNy8zMHoL/b3PJEGMuPGweb4=
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d377bf667a48-DUS
x-amz-request-id
XKASFT9RXGBG6D4B
accept-ranges
bytes
access-control-allow-origin
*
content-length
66289
server
cloudflare
x-amz-server-side-encryption
AES256
65a6a6eb502246ae86e06ab7_Background%20GRID%20pattern-p-1600.png
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		53 KB
54 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
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Requested by
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URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
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Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
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cfExtPri
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General
Check archive.org
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https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a324498a8176a55b55_Ethereum.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua-platform
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Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
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x-amz-version-id
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server-timing
cfExtPri
date
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vary
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60 KB 		Image
General
Check archive.org
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https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65ccda2c462160bbefdeadca_Logos.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"da08376957e716b11614e0310cc8d945"
x-amz-version-id
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content-type
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vary
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server
cloudflare
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AES256
jquery-3.5.1.min.dc5e7f18c8.js
d3e54v103j8qbb.cloudfront.net/js/ 		87 KB
30 KB 		Script
General
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https://d3e54v103j8qbb.cloudfront.net/js/jquery-3.5.1.min.dc5e7f18c8.js?site=657ba316d2b6a27c7d778152
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
13.226.247.220 , United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
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Software
AmazonS3 /
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Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
content-encoding
br
etag
W/"dc5e7f18c8d36ac1d3d4753a87c98d0a"
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22931
access-control-allow-methods
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x-amz-cf-id
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date
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content-type
application/javascript
last-modified
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vary
Accept-Encoding
cache-control
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via
1.1 2b339de228a4c61814fa560f3f9e1bec.cloudfront.net (CloudFront)
access-control-allow-origin
*
x-amz-cf-pop
FRA56-P14
server
AmazonS3
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14 KB 		Script
General
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https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/js/cyfrin-2-0.schunk.36b8fb49256177c8.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
content-encoding
br
cf-cache-status
HIT
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x-amz-version-id
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alt-svc
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cfExtPri
date
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content-type
text/javascript
vary
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priority
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cf-ray
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/js/ 		235 KB
48 KB 		Script
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/js/cyfrin-2-0.schunk.49d8e9cf717af3d2.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
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https://www.cyfrin.io/
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sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
content-encoding
br
cf-cache-status
HIT
etag
W/"de45d6b4983c916e5804016c93b071c4"
x-amz-version-id
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GET, HEAD
alt-svc
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server-timing
cfExtPri
date
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content-type
text/javascript
vary
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priority
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cache-control
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cf-ray
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1 KB 		Script
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/js/cyfrin-2-0.928c810e.6da04467fecec40a.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
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https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
content-encoding
br
cf-cache-status
HIT
etag
W/"ea29a54973a5fe019af569c1cbe70657"
x-amz-version-id
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216683
access-control-allow-methods
GET, HEAD
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
text/javascript
vary
Origin, Access-Control-Request-Headers, Access-Control-Request-Method, Accept-Encoding
priority
u=2,i=?0
x-amz-id-2
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cache-control
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cf-ray
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access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
script.js
rwj69h.csb.app/ 		106 B
452 B 		Script
General
Check archive.org
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Full URL
https://rwj69h.csb.app/script.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
172.64.151.115 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

x-request-id
GKYwgRqgIf88eoYFpRnl
cache-control
private, max-age=0, no-cache, no-store
content-encoding
gzip
cf-cache-status
MISS
via
1.1 google
cf-ray
9ec1d3788e761b4d-DUS
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
text/javascript
vary
Accept-Encoding
server
cloudflare
priority
u=2,i=?0
css
fonts.googleapis.com/ 		11 KB
1 KB 		Stylesheet
General
Check archive.org
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Full URL
https://fonts.googleapis.com/css?family=Inter:300,400,500,600,700
Requested by
Host: ajax.googleapis.com
URL: https://ajax.googleapis.com/ajax/libs/webfont/1.6.26/webfont.js
Protocol
H2
Security
TLS 1.3, , AES_256_GCM
Server
2a00:1450:4001:c13::5f Frankfurt am Main, Germany, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
Software
ESF /
Resource Hash
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Security Headers
Name Value
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X-Xss-Protection 0

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
gzip
x-content-type-options
nosniff
expires
Tue, 14 Apr 2026 09:53:53 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
text/css; charset=utf-8
vary
Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
last-modified
Tue, 14 Apr 2026 08:38:50 GMT
x-frame-options
SAMEORIGIN
strict-transport-security
max-age=31536000
link
<https://fonts.gstatic.com>; rel=preconnect; crossorigin
cache-control
private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin
*
cross-origin-opener-policy
same-origin-allow-popups
cross-origin-resource-policy
cross-origin
access-control-allow-origin
*
x-xss-protection
0
server
ESF
uwt.js
static.ads-twitter.com/ 		47 KB
13 KB 		Script
General
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Full URL
https://static.ads-twitter.com/uwt.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
146.75.120.157 Frankfurt am Main, Germany, ASN54113 (FASTLY - Fastly, Inc., US),
Reverse DNS
Software
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Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

vary
Accept-Encoding,Host
cache-control
no-cache
content-encoding
gzip
etag
"febdfdde15ca9ae106d9550b1f793bcb+gzip+gzip"
accept-ranges
bytes
x-cache
HIT, HIT
p3p
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content-length
13407
date
Tue, 14 Apr 2026 09:53:54 GMT
x-tw-cdn
FT
last-modified
Tue, 14 Apr 2026 03:11:53 GMT
content-type
application/javascript; charset=utf-8
x-served-by
cache-iad-kcgs7200065-IAD, cache-fra-etou8220157-FRA
x-amz-server-side-encryption
AES256
jetboost.js
cdn.jetboost.io/ 		14 KB
5 KB 		Script
General
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https://cdn.jetboost.io/jetboost.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:223e:de00:1d:7a82:2900:93a1 , United States, ASN16509 (AMAZON-02 - Amazon.com, Inc., US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

vary
Accept-Encoding
cache-control
max-age=86400
content-encoding
gzip
etag
W/"b0c42beeac7f1cfd2482db45d8f218a2"
age
6115
via
1.1 ab23076896ec73a1a830c9cdc49fcac4.cloudfront.net (CloudFront)
x-cache
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x-amz-cf-id
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date
Tue, 14 Apr 2026 08:56:34 GMT
content-type
text/javascript
last-modified
Sat, 12 Apr 2025 00:38:13 GMT
server
AmazonS3
x-amz-cf-pop
FRA56-P4
x-amz-server-side-encryption
AES256
65989025783cd98f3a2ceef0_Avatar.png
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		297 B
700 B 		Image
General
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https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65989025783cd98f3a2ceef0_Avatar.png
Requested by
Host: cdn.prod.website-files.com
URL: https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/cyfrin-2-0.shared.599cffe0e.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
9eb58e89f81cc3296111dce672af3fedcf16365a7b1b5795e3b7326a2cb50163

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/cyfrin-2-0.shared.599cffe0e.css
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"ac40332e294c9500e45753029da5ceb9"
x-amz-version-id
pTdtX8mVP5SLLpnDhDYnX91b.MevIvs.
alt-svc
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server-timing
cfExtPri
date
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content-type
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last-modified
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vary
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cache-control
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cf-ray
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accept-ranges
bytes
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*
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297
server
cloudflare
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AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		42 KB
42 KB 		Font
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6580f8ca8edecb04f322656a_Satoshi-Variable.woff2
Requested by
Host: cdn.prod.website-files.com
URL: https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/cyfrin-2-0.shared.599cffe0e.css
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
e739aff9b4d02c264341d6d4872edcda28e79373aeda936f659566a1cd3eb47f

Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
Referer
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/css/cyfrin-2-0.shared.599cffe0e.css
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

access-control-max-age
3000
cf-cache-status
HIT
etag
"70880e42f07b0386e261974cd14820a1"
x-amz-version-id
jfgGLuMIeNaWCIK0pve.9AsK6jE9jYyD
age
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access-control-allow-methods
GET, HEAD
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
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content-type
application/octet-stream
vary
Origin, Access-Control-Request-Headers, Access-Control-Request-Method, Accept-Encoding
last-modified
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x-amz-id-2
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priority
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cache-control
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cf-ray
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*
content-length
42588
server
cloudflare
x-amz-server-side-encryption
AES256
truncated
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2 KB 		Font
General
Check archive.org
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Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
9a50821b46158c264ae8c3bac28c40e317f9ab2b7c5c45b00c7574c7724665c4

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
Origin
https://www.cyfrin.io
Referer

Response headers

Content-Type
application/x-font-ttf;charset=utf-8
65b40ed28ddd14838e585c0d_Vectors-Wrapper.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		2 KB
1 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b40ed28ddd14838e585c0d_Vectors-Wrapper.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
c3fc11b778d4949ea8bb289cdd1b183abba31d806add353d2b018c913554b3df

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"0dbd51e334a4b1aeb6a3ce1416eb0cde"
x-amz-version-id
dHTAnliOZa1QI6afUlN.tMIwA55HrIR8
age
14582003
alt-svc
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server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:53 GMT
content-type
image/svg+xml
last-modified
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vary
Accept-Encoding
priority
u=3,i
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cache-control
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cf-ray
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*
server
cloudflare
x-amz-server-side-encryption
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		32 KB
33 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a2836d53a148875fce_Solana.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
57dd954a107aa4af7b9f8fc967c425f93d132e71669524a64124960b53d4cb0e

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"ec2d5891dc36802f706fc7cc92319f57"
x-amz-version-id
Um1UkcJ_IJaBszI0s2CeqmOlbrz5zTUE
age
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alt-svc
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server-timing
cfExtPri
date
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content-type
image/png
last-modified
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vary
Accept-Encoding
priority
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x-amz-id-2
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cache-control
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cf-ray
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bytes
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server
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x-amz-server-side-encryption
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25 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65ce1eb8742beab6cc76a7cb_zkSync.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
72e7478f5e1263e442d3fe111c24c195b7a9e48f570b58d7f88803bdda6718cc

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"922ea1e9d47e0d708cc03824f76daf81"
x-amz-version-id
LYMukLh_s5UDvztGMoo3F_V_95me_.de
alt-svc
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server-timing
cfExtPri
date
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content-type
image/png
last-modified
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vary
Accept-Encoding
priority
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x-amz-id-2
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cache-control
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cf-ray
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accept-ranges
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*
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server
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		32 KB
33 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a2d0f8359be7d60bb1_Polygon.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
b4218e24c03df4c6ba155455cfca9abeba46cffc70ecdf02b861f6c182052e81

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"443256cd383c71ffac88ebb90f2d3dc8"
x-amz-version-id
fPyiLFGWGJ70.XK_HgXR3Ymlabnpt0NY
alt-svc
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server-timing
cfExtPri
date
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content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cf-ray
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x-amz-request-id
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accept-ranges
bytes
access-control-allow-origin
*
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33094
server
cloudflare
x-amz-server-side-encryption
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		29 KB
30 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a21ad2cc0e5f6be6c3_OP.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
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Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"df02ba84f1ab05f03ce2d229c655ccd2"
x-amz-version-id
hiPAix9lIVmCSMZhpga4TmA_s46C3xfp
age
15098830
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
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cf-ray
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x-amz-request-id
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accept-ranges
bytes
access-control-allow-origin
*
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server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		33 KB
33 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a201097196971216a2_Base.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
b68bdb54d8bd74352313b5b9e03ba55af6d615d82647e91b78f78f39a5dc252f

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"b91fab1d10c779822b65ee8063ae72b0"
x-amz-version-id
PWM_8efkuYJFwwPetShDuB_fsuE1VHrV
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
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content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
nrVIG/Jj9p65G2ubZJQFu0NzM0MblvOsKJ3tujLij0ujeMn4+OOgKgMQqXPCsm1WbN2o+CUZ/qrKCy66kx4UMHvXaE4J2Bh774dKWkDpWvI=
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d3786fcc7a48-DUS
x-amz-request-id
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accept-ranges
bytes
access-control-allow-origin
*
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server
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x-amz-server-side-encryption
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		31 KB
32 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a2995001b6778e7399_Avalanche.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
b5b8b64f6639070c18d8b59111436d99cdbb84e6a97d2da5d540ae47d77969da

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"85d34b3595cdc41ebc06d5b0017638db"
x-amz-version-id
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alt-svc
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server-timing
cfExtPri
date
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content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
i7tfDy4AN5pZdet95rk6PhL26HtVVi7yDVT2LKfE4y86XmwAPBAPO3JFvRUGz2+J/o63JG30/IwI8V4ENTpeww==
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d3786fce7a48-DUS
x-amz-request-id
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accept-ranges
bytes
access-control-allow-origin
*
content-length
32148
server
cloudflare
x-amz-server-side-encryption
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		31 KB
31 KB 		Image
General
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a20996f4161a95b6fc_Arbitrum.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
0d3aa5e70efc9c2ae47b96f31a5a2169ff8e1aeae547b3fdb5d77f33f530e9a4

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"dc57128a2a1d828e4ed830739f265a4e"
x-amz-version-id
JzNtgzAwRbOC1OiTSYieF8uYxWUdjs2R
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
cf-ray
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x-amz-request-id
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accept-ranges
bytes
access-control-allow-origin
*
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31779
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		32 KB
32 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b856a26bf492a6b090fcf6_BNB.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
7387fb19752d5525d81d1d3d1459b3dd2cbb41ae62804bee7ece101d5a69ccbb

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"88cda477aa80bab5ac0a7cac377282a9"
x-amz-version-id
1U_zrLdHKbF2DhzorZxilsJlUTRqeaHj
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/png
last-modified
Tue, 30 Jan 2024 01:53:39 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
CipVyx/YMQ0EkWMzUZt7OQLB+VllJdZCTSWysswYWu+YoJyYrcdwH4oK64zt53tp1UEcmym9eJ0=
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d3786fd17a48-DUS
x-amz-request-id
PKAH043X43QXGFM3
accept-ranges
bytes
access-control-allow-origin
*
content-length
32800
server
cloudflare
x-amz-server-side-encryption
AES256
6681564713df7201f1f4b004_Frame-3.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6681564713df7201f1f4b004_Frame-3.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
1a44c7bf9cdbf02285cb834d2278456f1e6d20c8387bba5936a8c4334e541144

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"9098b4c4ec844fcf06b5aaf1fb586a06"
x-amz-version-id
OnpVEMwsjI.IFjODnr.dwsIqz.36UWUO
age
19897236
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 30 Jun 2024 12:57:44 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
F9RPZ0Q4QTWEV8RK
cf-ray
9ec1d3786fd37a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		12 KB
5 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66350a72dbd8769b237f8d14_Wordmark%20Blue%201.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
945b9480980624fd01434eed442a5cba2a17a345c842dcc8fdb23ac01fccaf50

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"e0e63c80ac18e1fe8e83214eeff717bf"
x-amz-version-id
S9ISw_w8P.i13WJd8s6mGyLvko0KdUv7
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Fri, 03 May 2024 16:01:56 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
SP4850WY0M151JYB
cf-ray
9ec1d3786fd57a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/661fb4b51f9d478105cb03b7_Ondo%20Finance.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
c16d9a57308ddd52ed1f56a60614081987566d1116c0aebca122f7e777b40c87

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"844cb00d0a10742daae4e9fff772f0ed"
x-amz-version-id
fsnL9fEm8Kob.S0_qKuPnfslCowIpNcN
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 17 Apr 2024 11:38:30 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
T208KETJMKVKEKGA
cf-ray
9ec1d3786fd67a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
679b73dbcb09b3c622b50964_Soneium.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/679b73dbcb09b3c622b50964_Soneium.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
4bd514ee5372429e4d8b2f22b6c76250f6763416de4fdc113ac03b3264c05653

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"6d628b58cc3634c563406adb0a1ab5ef"
x-amz-version-id
3lwzTspJAmVcYHLgqPWS_V9LB5Cfd7lT
age
3196662
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Thu, 30 Jan 2025 12:43:08 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
32SMNETZYF439Y3H
cf-ray
9ec1d3786fd97a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66c4b3e66777380a37a2aaf1_Linea.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
ba3e1a48b23be5192f18266defe4e95f2f541f1186cbfa51f44bec7deb2b6696

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"7aaed31ec135dae1c4adce8863709471"
x-amz-version-id
vlns5ViJLGWSo56HOI9ZCr4CLl.N_NEs
age
3554613
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 20 Aug 2024 15:19:03 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
PSZ5eB/zPYGvNPZ507itLLNfxop2JDNmxkHxgXjWj+ERKnPm/oUk2G6q/MPzONbezGUVVrkotwA=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
T98XQFGEJQDBEV8R
cf-ray
9ec1d3786fda7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66c4b42c67bd01edc0bbdccf_Lido.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66c4b42c67bd01edc0bbdccf_Lido.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
76609488b111185584901bfc205148d0303fe6629dbe8c21796df696382bbf0c

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"95481f9e79fb5293a875417a4e7c8117"
x-amz-version-id
lkvGzAlSUZ3PbzgNB_ZjE.On6z_WwpIF
age
5086866
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 20 Aug 2024 15:20:13 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
9H5X4B5KxkKT6T5QhP/TRILoySena8WaTt+s1EXuCE0E8pRX4np484xyCC2bpvLjyNLmoYutFSVQQ3bT74xzFUQJqx16D+0AksRNjNSMU5A=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
MNFJ20VMSM37PXXK
cf-ray
9ec1d3786fdc7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		5 KB
3 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65ca8c53c3c88f443bf3ddd3_Swell.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
cb4dadac38f04e45aca36578eab7fd96216af6542ebdca9b7768b25aacaf95cd

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"7d5a3413918d3c8455afe109bb04f76d"
x-amz-version-id
vaUzuyf8naXOr6OZL0Ev4JgRTzbz3nzC
age
13470100
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Mon, 12 Feb 2024 21:23:32 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
3PMjMIS38Tbj8Ojh7z95EAomdi6BK9lEseRnkIit659ccKRNNsNBfm2VnOe7GmLcZtgs8S2gXJ0=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
5XE4HE7SX75HQ9XC
cf-ray
9ec1d3786fdd7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		19 KB
7 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66c4b4f07703357d63df3fac_Securitize.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
5706a62438906c00a3ba4d996649d10491a91deea3657b71b62e1066656a82e7

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"eb25c665d10587ce0a9aa4b3245ab208"
x-amz-version-id
IW.e6hfsVVc3CUQnrf7FFniULF6qm8lG
age
2917109
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 20 Aug 2024 15:23:30 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
Mbwci0fhPRPGEUZ2iC+xKRztGKUpO7JBSzjI1PI9LDmWITXnaW9LLwIDdgVe5Jgsx/K0kgYfb32Z0zzUP2n2WeWeYaZg/2J9
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
Q601MZ3A687CYW7B
cf-ray
9ec1d3786fde7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
668155f44cef93b91fb6851c_Frame.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		6 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/668155f44cef93b91fb6851c_Frame.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
c1f9053b86d78e0e7a7bed0da26478f99d3a4dafee3464ddf6907ca4554decbd

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"dcb16ff7e883af2c3278e836457b099c"
x-amz-version-id
q9Ycr.a1Y.Z_baEn9ix6A3JtvXaNmewa
age
6437173
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 30 Jun 2024 12:56:22 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
1aeZ514p9UeIjRpCAY5SEkPkViRAcbaNtkxeKoLtDywSqUMmmMHi67g4AuOqbR70BVhxLmlCdTo=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
JJN84BEQX19RH435
cf-ray
9ec1d3786fdf7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66c4b7adb82914b4945dc1f5_Chaos%20Labs.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		45 KB
13 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66c4b7adb82914b4945dc1f5_Chaos%20Labs.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
b9b7d084c278e471e2d1a75d9457f4f5e928fb8fcb639d83ffa63e825d2ee0c3

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"3e5d14b67bbfcb0e21231db9b20dc5fb"
x-amz-version-id
pC5Oge.X_83xeoewJEXLg48dsl4pNKmZ
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 20 Aug 2024 15:35:10 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
Rr2JcmJrTpMDpUMXyN91BCR4xyHRsaUagfjYfCtmhxrLY33Kgnsep9X8A0WywyotY7yMEBS812U=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
1N8AEPS6P5EGSBA3
cf-ray
9ec1d3786fe27a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
65b181ef3fd13f93a2fe0ee7_Farcaster.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		14 KB
6 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b181ef3fd13f93a2fe0ee7_Farcaster.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
c4df4e8fddf28011c827822fe76b622aaacb63c18248b02ac34d34f6ce5848d2

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"0a48fa8375a685789b1d1bab5be25f3e"
x-amz-version-id
jalIwdAkzRQB_KFzmguESRai6JxoLfqJ
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 24 Jan 2024 21:32:32 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
7IOLkkjHDdsyNhtMTZlUM+Vle97vP010pyAajVLhux0ifNcTLWoAlBrOtAtBN6xce6H+QPahYugovZeAc0fIWS52hZgvKfpqkf7qi0Fyhrs=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
QZJS79QQEYJ4GP7C
cf-ray
9ec1d3786fe37a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
661ec6809410fb8c32864755_Beefy%20Finance%20-%20Black.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		10 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/661ec6809410fb8c32864755_Beefy%20Finance%20-%20Black.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
431472a64fce9df6cf71bb86e029cb731892ef3d23a6bd4beef74794583b1bf2

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"32e5e5e9c1f6e4e106da1869c11ec123"
x-amz-version-id
2qm8FhhNOzBViu5z4Dw89yBncvia2jv5
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 16 Apr 2024 18:42:10 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
Tc089wf+gaSKlb+1MTPsTPXfcEswbN54AoUndPpX6QCAoZfcvwCjjFbJGM0XsudzyrGQur/zfmLut4Ey44Y5RW8LxQAUhj6R9Ks+niMKjiE=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
F9RWABQG5E54NGSV
cf-ray
9ec1d3786fe47a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66c4b7eb12485d198c80234f_Axelar.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66c4b7eb12485d198c80234f_Axelar.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
eb049b32bfa8450444017dce69c2a49f2286eb5c4cb42e666c0a3f80b44e31d6

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"2ef0dd1ffb800a5ede28f075463915e8"
x-amz-version-id
0OVJ.8.BzyL3ukWYQL5Jq3RhVVZ.lEga
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 20 Aug 2024 15:36:12 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
dDULGiw3YlCNA3or5voRvI5DqpXfuY+C+E6Xw9nHBCgCeWUXvQPPENLQVyMmEL1e3axQasBfVWc=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
22R839KTTNDV7ABK
cf-ray
9ec1d3786fe57a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66facc00bd38a8f8551a4a99_Starknet.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		12 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66facc00bd38a8f8551a4a99_Starknet.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
fbabc4c1192b1ebba1f7bb94ee45ee7919c5e01ce27c4ddfd5557de863ff3ce1

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"6330428b8e45314ac1564ffa63573bf3"
x-amz-version-id
21Br6gjSj_Gx4thy58qC.XTANthkKP.6
age
3782481
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Mon, 30 Sep 2024 16:04:18 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
UpDkWPymQI6a0K2Oz4ZPz0DbhfNC/68Re3jVvGbG/P76rigJvb9DZPlo9O4fSLbxxnMqDzIzrhhFTzuwQjw7JHxykT+XXmkq
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
4JT90DYE20T1NP9N
cf-ray
9ec1d3786fe77a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66facd06242e25b55e874caa_PWC.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66facd06242e25b55e874caa_PWC.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
6549a3946607597ef065d31fe4614bb917fd8d11f7d0ee63fea1ea7098b8f5b4

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"dc211b4e8577e7a33d2efaeae53d3226"
x-amz-version-id
QZksDCLaxCOzD2K98TcngkyFlZKciBvH
age
4196824
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Mon, 30 Sep 2024 16:08:40 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
XlftL9H/ICm7XxGQCI+aEIXK33H4ZdXWzSjDWx1UlQCsK/++fiQvdcMxOVXnAyZvOzgRVex/RN0=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
9G0GSBX3MV9WBBMX
cf-ray
9ec1d3786fe87a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
66facd6f96f4f9721eca44a8_Wintermute.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		12 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/66facd6f96f4f9721eca44a8_Wintermute.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
72892c90097f75cfc428e245b32066fdde2a91eabf23ac8792d1f6c0dd757a40

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"2f6c6c387ac67cb85755a8b5464a6681"
x-amz-version-id
C_iDIVEfXnJFJmyASK48MUzluY07OC7c
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Mon, 30 Sep 2024 16:10:24 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
/UgNrJj9+34oRpqEfXYrN1eZeGc+PB4pnZXbVJB241DCBcGFAdfiwUXGrRIAJYq4MgNe9uSW4zPjBzeTTl60h5xIMNoA6hRG7Jurq0yABV0=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
87H5640CDGGYZEAR
cf-ray
9ec1d3786fea7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
6718d9ca0948d40468d7fd96_PancakeSwap.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		14 KB
6 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6718d9ca0948d40468d7fd96_PancakeSwap.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
1735b8bdfd2d2aba056d9e31d6ab001fc9a81d43ddc2798e136fd04ee10045ac

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"04906fe9f13468f8bd904f4228f62e10"
x-amz-version-id
RvOBhnQtUOEW3Lmamp5dcUQ9yPFcpRX_
age
2482348
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 23 Oct 2024 11:11:08 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
qgqEnMVq6w08dqM+QZettfvfuflnRiUK5uiIzkCGneeG16jjiEgskBr0R8QksNQj8ZWFtZXHXMA=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
315ZZ8BT8C1WCDP0
cf-ray
9ec1d3786feb7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
6718d9e9628dd5cf72559f8b_Benqi.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6718d9e9628dd5cf72559f8b_Benqi.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
f1125e7b433a2f11f2d679923316bd4c4b375602c597472eadabbd0445db60a5

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"ac7de9374af0d0987f94e4c4ea154bf9"
x-amz-version-id
lmrAnJInf5FDcLPeoMVrtvM5s2OP5Twm
age
2583037
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 23 Oct 2024 11:11:38 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
YljYK+Mleime+8GhMo8TJsYRJCWOjogNw9rDQoMPgFpHT+iFrmLpK5bi46Vh/uHX/8kBUm7lIfc=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
KHBEDXH34P37YQ9F
cf-ray
9ec1d3786fed7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
679b73db6e5e13c038fa33d5_Ethena.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		6 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/679b73db6e5e13c038fa33d5_Ethena.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
3e0c68de0117f98150fb356f16c7e936a4fe110b2732ca3829deb9d317f63b04

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"32b787c4b932bdde45ba585a9df6ce41"
x-amz-version-id
EASlgYOqGmPbmfGMj9T8URNttdpLyA99
age
2261810
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Thu, 30 Jan 2025 12:43:08 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
GVseMN0E3Lp17toBtQSOYVtEGTxw7mztky0SiexHLeTst5Drcjg0Keyn4PAcGPqODqO8rHzP6XFzQbE2lBB8iA==
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
BEF7PPXZ3ZB372WV
cf-ray
9ec1d3786fee7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
679b73dbc9b1fe293d296200_Dolomite.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		11 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/679b73dbc9b1fe293d296200_Dolomite.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
a7626a270d2477f0e4fc868d777c9503d7d9b28419dd35b7bc0d87583ab9ddc5

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"d0132be8ecdafa4ee0318e0f5558236b"
x-amz-version-id
7iYRmNakJcdChwYwmB88a7yo5fpjcmDS
age
6378245
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Thu, 30 Jan 2025 12:43:08 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
dQqHYzcVkKvAnqvtTJGpXBINUXABOISz5TU4j3bF/A43lcGx1oRuoo7HkUcMvyPPJDyGwkSdrSifuWatbK/cZY0QeiyIiyCT9ICyYvDzBJM=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
PB0PHQQ16S0TMRVK
cf-ray
9ec1d3786ff07a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
679b73dbe9b9ad0339c761b8_M0.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		951 B
929 B 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/679b73dbe9b9ad0339c761b8_M0.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
a8a17b4da7c5370c782546923a24d6c7e1b3dd7346bfea9dad9ded8ed632ad2b

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"4ed419908817328b1bf5482f062682bf"
x-amz-version-id
E5NhYBDkwEwXQNfzNl7fL9oAJH_HQQ8W
alt-svc
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server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
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vary
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cache-control
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x-amz-request-id
XFKK4CV7EYM1XD4J
cf-ray
9ec1d3786ff27a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		7 KB
3 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/67efcb3f8c44622994fe4d02_Curve.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
543c5585b881f1bcbdf54224be7f69595ea61b0d8552eafc98ed3a6cf5a17f40

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"f4d4d189bed2476317e455b3e89b9b9f"
x-amz-version-id
taIBF4pUdYE5HfiHcr3hEu5HPmK_Ve3V
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Fri, 04 Apr 2025 12:06:25 GMT
vary
Accept-Encoding
priority
u=3,i
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cache-control
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x-amz-request-id
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cf-ray
9ec1d3786ff37a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/692370f452c17043a00f2b10_MetaMask%20(1).svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
50588e67f961710690fad0695ec0395ff32b85185d496419b93e3b02d745644a

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"e08e3633aeb8937911f2b8bccb6dd86d"
x-amz-version-id
peXzKnzwLpIQT_UMZQeA7MN9xA5082cP
age
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alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 23 Nov 2025 20:39:17 GMT
vary
Accept-Encoding
priority
u=3,i
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
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cf-ray
9ec1d3786ff47a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/69237017ea88b11f73e3cf91_KAIO.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
68dbf3334c648fd193f74315813ffc18dabb69c1b0e9f5872bdb4cfea7e7f55f

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"f25dc0b63f63799277f3be6a5a4f1968"
x-amz-version-id
oodJxWeJLrZ3Ru9VgRIsDRdrSne7FuHv
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 23 Nov 2025 20:35:36 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
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cf-ray
9ec1d3786ff57a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		12 KB
5 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/697a59bcd266ce1bb9646f53_Ethereum%20Foundation%201.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
044d33bfa95ba1fc34fdc0a7ed8841cdae675a3af2a9b72caa4316837ee2459e

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"f31573071484a0c50b959a7413c24ceb"
x-amz-version-id
VY3DXredZIKoKFJHnv6QXR_3KLzlJH7l
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 28 Jan 2026 18:47:26 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
GCFZ01G70TQ9N0KF
cf-ray
9ec1d3786ff67a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		2 KB
1 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/686d319c95571e86d3841b4a_Euler.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
4b331633a5a9095b19eb811284dd93f5b845de5f83db96669ceb6fb479e09add

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"e60096774a5511fda823fd97e9bd5eeb"
x-amz-version-id
UKhuKOe8GihgW1lrQ05xXuZjyiaGHBHh
age
3809058
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 08 Jul 2025 14:56:30 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
cL69y1iIYm1zBk0uNbtPzX4hIWQPY6vyFQLqA08VzawuQ6WJuvurDUaR5Kk9xotMOOmgaSHpjgo=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
W183QAS2N7YVEMBM
cf-ray
9ec1d3786ff77a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		17 KB
7 KB 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/686d31a9232a98c9c09e56f5_Uniswap.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
75722033cd6a3d69e8646dbba588bd70fffb66464a010353837d5749afacde51

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"1eafcc91e784119daa08de38b52ffd5c"
x-amz-version-id
FVTy5q7_MRVADzs5jluxm6_5UTc27Vg2
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Tue, 08 Jul 2025 14:56:42 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
3MPnW/1DqQBTZ+UZVGIa0czlaqvT+uok+KdVt20csbw+S1yZpJMILVfI2ygu0nHnaiXYPQL6aVQ=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
WEF31QWF66AB7GCF
cf-ray
9ec1d3786ff87a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
6923704fee608d06aaee3370_Symbiotic.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		993 B
985 B 		Image
General
Check archive.org
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Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6923704fee608d06aaee3370_Symbiotic.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
790f607f3827baab320a87f04dfdf36d787d6242ffb8f24e542d5e8640cd7aa0

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"44750d50432e0ce0ce12bc3a891c3b72"
x-amz-version-id
95ZcewnXoLM1lx8_IACoAzMHX.qtIrzl
age
2482348
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 23 Nov 2025 20:36:32 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
315V0C6Q10KE19PY
cf-ray
9ec1d3786ff97a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
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cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/697a51eeb0f8a5e7a7102c3c_aztec.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
6f9cbdc9207f4ab63fa99d0e7d7becae9414bc6b98bd83de44e2d1168dbf7cef

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"e0e0c0506373275b0ce93ff3f4361b0c"
x-amz-version-id
IhmmdaoQjNzzAKEEnsWT25_AXDfaNGyc
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 28 Jan 2026 18:14:08 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
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cache-control
max-age=31536000, must-revalidate
x-amz-request-id
E3B8K00Q0BHG64VJ
cf-ray
9ec1d3786ffa7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
697a5220cee26e23510bb968_matrixport.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		8 KB
3 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/697a5220cee26e23510bb968_matrixport.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
f277df85f0f3976e82fd6b9795a9ae71f55df470a884d68ed69671e9e60de5f3

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"9b4551bb087090600b3b0dc593496434"
x-amz-version-id
6nK1nx0h2j.zFlodQ31CPLK1jr_R5W5_
age
2917109
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 28 Jan 2026 18:14:58 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
CyJ5Fckzwngnpp3j4sDVCFhChyughr9ci/0dhNNfjhcGY9OrVYklNpYYe+JSJRy6cVrTVoOBm0c6N6APi2hLbh4SfTr+MxsD
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
Q609C884KH8KYQC5
cf-ray
9ec1d3786ffb7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
697a52309570044ab0efd584_stbl.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/697a52309570044ab0efd584_stbl.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
b166555860b67b6f06eeacc7ae336cea51e5230e1768c75a749e4b1cb92eb496

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"90d7758a6453a09165e53b6d0a32af79"
x-amz-version-id
I2gFVJ0gQA1pia_9GhqYgkIMk_89N81n
age
2917109
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 28 Jan 2026 18:15:14 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
+MLa0GASAXzxTL9Q0fmW67gMMAwanuLM39E2th0D9l2E5qpwT9Li7+Chk2GdgCUM7QFxq7Zy/R+f+EmPRL4kVA==
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
Q6026350NJG4FQWB
cf-ray
9ec1d3786ffc7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
697a5241c61c35d67609ca1b_wlf.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		3 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/697a5241c61c35d67609ca1b_wlf.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
93f7e669e3fa19fa69f3fbe7753dbc5c8413ac0fb534ea05392e95b242b0d0e8

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"4bfc801099ea3e185b56c2bfc22e2777"
x-amz-version-id
FRaEChbT_DyRg0DBnZUWvCl.rGPlP_F8
age
3781403
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Wed, 28 Jan 2026 18:15:30 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
3q0jlkyUzvCpDmlPST9QqE+k4G/1Xktmpj9NNSZGIzbLgoZ0dpL+mfM1Aus/cuSmquGWozjLx4yHHshwGgywpdX2uJBLczkx
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
D2HCFNJRAWRKAGRY
cf-ray
9ec1d3786ffd7a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
692370a425fa75e2efd39ab5_Aragon.svg
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		4 KB
2 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/692370a425fa75e2efd39ab5_Aragon.svg
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
ae8cca20ed87aa5120463f847a91318ba8e911f44579173a55db17263fed06cd

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

content-encoding
br
cf-cache-status
HIT
etag
W/"44e7a140194021ca88a225e50006e12d"
x-amz-version-id
JkqtzFGIxDgoEonzUGVU_TrV8QxNzJGw
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/svg+xml
last-modified
Sun, 23 Nov 2025 20:37:57 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
ZYV4ircawYj2jwiNMD2oPZO3g6Io8wrDhKsc/8f/FoTUlqpJJgYcBvgsnvSbJ63xyfGxPHz5jBY=
cache-control
max-age=31536000, must-revalidate
x-amz-request-id
75HQNPSVVZZFXSY5
cf-ray
9ec1d37868007a48-DUS
access-control-allow-origin
*
server
cloudflare
x-amz-server-side-encryption
AES256
6634fa999f82d0075a265bf1_Background%20pattern%20decorative%202.png
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		102 KB
102 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/6634fa999f82d0075a265bf1_Background%20pattern%20decorative%202.png
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
ff1846fe7c9856c25f65121c4390a34c03b1de659fe657834f646e32467ee068

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"a0d38ef63ff95a099e334e12d5094f75"
x-amz-version-id
kowuIJM9vfUGpn.2T0nWUM.r5aAQWBXQ
age
4013508
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/png
last-modified
Fri, 03 May 2024 14:54:18 GMT
vary
Accept-Encoding
priority
u=3,i
x-amz-id-2
34Nassw4D6Rxmbe5VQjLnZwr0CjVx9EGipd0IAq4zswUTOn7A0z2D6U4aTLX5xbc7lxssqEtLgB5yRatxHkI9D8neyXxiGBO
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d37868027a48-DUS
x-amz-request-id
WK1NXYK58P6BJ9VJ
accept-ranges
bytes
access-control-allow-origin
*
content-length
104102
server
cloudflare
x-amz-server-side-encryption
AES256
adsct
t.co/1/i/ 		43 B
660 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://t.co/1/i/adsct?bci=4&dv=Europe%2FBerlin%26de-DE%26Google%20Inc.%26Linux%20x86_64%26255%261600%261200%2623%2624%261600%261200%260%26na&eci=3&event=%7B%7D&event_id=3ecdb50a-9fe1-4c6b-8945-0bbbdd29c8de&integration=advertiser&p_id=Twitter&p_user_id=0&pl_id=387267f4-35ff-462b-8eaf-4a20d8c369b5&pt=Blockchain%20Security%2C%20Smart%20Contract%20Audits%2C%20Developer%20Education%20-%20Cyfrin&tw_document_href=https%3A%2F%2Fwww.cyfrin.io%2F&tw_iframe_status=0&tw_pid_src=1&twpid=tw.1776160434017.283438061376472183&txn_id=ojgyb&type=javascript&version=2.3.52
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
172.66.0.227 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare envoy /
Resource Hash
ac8778041fdb7f2e08ceb574c9a766247ea26f1a7d90fa854c4efcf4b361a957
Security Headers
Name Value
Strict-Transport-Security max-age=631138519; includeSubdomains

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

strict-transport-security
max-age=631138519; includeSubdomains
x-transaction-id
bb8ae9e78d9dc4ee
cache-control
no-cache, no-store, max-age=0
origin-cf-ray
9ec1d378ffa4c7f6-DUS
cf-cache-status
DYNAMIC
cf-ray
9ec1d378ffa4c7f6-DUS
x-response-time
7
content-length
43
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/gif;charset=utf-8
perf
7402827104
server
cloudflare envoy
x-served-by
t4_a
adsct
analytics.twitter.com/1/i/ 		43 B
1005 B 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://analytics.twitter.com/1/i/adsct?bci=4&dv=Europe%2FBerlin%26de-DE%26Google%20Inc.%26Linux%20x86_64%26255%261600%261200%2623%2624%261600%261200%260%26na&eci=3&event=%7B%7D&event_id=3ecdb50a-9fe1-4c6b-8945-0bbbdd29c8de&integration=advertiser&p_id=Twitter&p_user_id=0&pl_id=387267f4-35ff-462b-8eaf-4a20d8c369b5&pt=Blockchain%20Security%2C%20Smart%20Contract%20Audits%2C%20Developer%20Education%20-%20Cyfrin&tw_document_href=https%3A%2F%2Fwww.cyfrin.io%2F&tw_iframe_status=0&tw_pid_src=1&twpid=tw.1776160434017.283438061376472183&txn_id=ojgyb&type=javascript&version=2.3.52
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
162.159.140.229 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare envoy /
Resource Hash
ac8778041fdb7f2e08ceb574c9a766247ea26f1a7d90fa854c4efcf4b361a957
Security Headers
Name Value
Strict-Transport-Security max-age=631138519; includeSubdomains

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

strict-transport-security
max-age=631138519; includeSubdomains
x-transaction-id
bde03beecbb7165c
cache-control
no-cache, no-store, max-age=0
origin-cf-ray
9ec1d3793ea3cf30-DUS
cf-cache-status
DYNAMIC
cf-ray
9ec1d3793ea3cf30-DUS
x-response-time
6
content-length
43
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/gif;charset=utf-8
perf
7402827104
server
cloudflare envoy
x-served-by
t4_a
UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2
fonts.gstatic.com/s/inter/v20/ 		47 KB
47 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://fonts.gstatic.com/s/inter/v20/UcC73FwrK3iLTeHuS_nVMrMxCp50SjIa1ZL7.woff2
Requested by
Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Inter:300,400,500,600,700
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.251.110.94 , United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
bz-in-f94.1e100.net
Software
sffe /
Resource Hash
3100e775e8616cd2611beecfa23a4263d7037586789b43f035236a2e6fbd4c62
Security Headers
Name Value
X-Content-Type-Options nosniff
X-Xss-Protection 0

Request headers

Origin
https://www.cyfrin.io
sec-ch-ua-platform
"Linux"
Referer
https://fonts.googleapis.com/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

age
602388
report-to
{"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
x-content-type-options
nosniff
expires
Wed, 07 Apr 2027 10:34:06 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Tue, 07 Apr 2026 10:34:06 GMT
last-modified
Tue, 09 Sep 2025 18:33:53 GMT
content-type
font/woff2
cache-control
public, max-age=31536000
timing-allow-origin
*
cross-origin-opener-policy
same-origin; report-to="apps-themes"
cross-origin-resource-policy
cross-origin
content-security-policy-report-only
require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
accept-ranges
bytes
access-control-allow-origin
*
content-length
48256
x-xss-protection
0
server
sffe
js
www.googletagmanager.com/gtag/ 		216 B
392 B 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-4EYV1MDWQC&gtg_health=1
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/haqt6iy0yx2eNjU3YmEzMTZkMmI2YTI3YzdkNzc4MTUy/FFAXpGEpiGhBCJaI7-adGAwzGBI
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:c17::61 Frankfurt am Main, Germany, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
Software
Google Tag Manager /
Resource Hash
c24c8a68f1ffcf9b37963dfdf26c4874c307feceac1245180f85db1da436416a
Security Headers
Name Value
X-Xss-Protection 0

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cache-control
private, max-age=900
content-encoding
br
cross-origin-resource-policy
cross-origin
expires
Tue, 14 Apr 2026 09:53:54 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
137
date
Tue, 14 Apr 2026 09:53:54 GMT
x-xss-protection
0
content-type
application/javascript; charset=UTF-8
vary
Accept-Encoding
server
Google Tag Manager
collect
region1.google-analytics.com/g/ 		0
0 		Fetch
General
Check archive.org
Download Go to
Full URL
https://region1.google-analytics.com/g/collect?v=2&tid=G-4EYV1MDWQC&gtm=45g92e64a1v9152326239za204zd9152326239&_p=1776160433949&gcd=13l3lPl2l1l1&npa=1&dma_cps=a&dma=1&gdid=dZGVlNj.dYWYxNW.dNzQzZD&_uip=%3A%3A&are=1&cid=665971148.1776160434&frm=0&pscdl=noapi&rcb=1&sr=1600x1200&uaa=x86&uab=64&uafvl=Chromium%3B147.0.0.0%7CGoogle%2520Chrome%3B147.0.0.0%7CNot-A.Brand%3B24.0.0.0&uam=&uamb=0&uap=Linux&uapv=&uaw=0&ul=de-de&ur=DE-NW&_s=1&tag_exp=0~115938466~115938468~117266400~117884344~118131810&sid=1776160434&sct=1&seg=0&dl=https%3A%2F%2Fwww.cyfrin.io%2F&dt=Blockchain%20Security%2C%20Smart%20Contract%20Audits%2C%20Developer%20Education%20-%20Cyfrin&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&gap.gtb=1&tfd=904
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/haqt6iy0yx2eNjU3YmEzMTZkMmI2YTI3YzdkNzc4MTUy/FFAXpGEpiGhBCJaI7-adGAwzGBI
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2001:4860:4802:34::36 , United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
Software
Golfe2 /
Resource Hash

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cache-control
no-cache, no-store, must-revalidate
pragma
no-cache
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
content-security-policy-report-only
script-src 'none'; form-action 'none'; frame-src 'none'; report-uri https://csp.withgoogle.com/csp/scaffolding/ascnsrsggc:138:0
report-to
{"group":"ascnsrsggc:138:0","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/scaffolding/ascnsrsggc:138:0"}],}
expires
Fri, 01 Jan 1990 00:00:00 GMT
access-control-allow-origin
https://www.cyfrin.io
cross-origin-opener-policy-report-only
same-origin; report-to=ascnsrsggc:138:0
content-length
0
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
text/plain
server
Golfe2
collect
www.google.com/ccm/ 		0
0 		Fetch
General
Check archive.org
Download Go to
Full URL
https://www.google.com/ccm/collect?rcb=1&frm=0&en=page_view&dl=https%3A%2F%2Fwww.cyfrin.io%2F&scrsrc=www.cyfrin.io&rnd=479787774.1776160434&dt=Blockchain%20Security%2C%20Smart%20Contract%20Audits%2C%20Developer%20Education%20-%20Cyfrin&auid=245008173.1776160434&navt=n&npa=1&did=dZGVlNj%2CdYWYxNW&gdid=dZGVlNj.dYWYxNW.dNzQzZD&gtm=45g92e64a1v9152326239za204zd9152326239xec&gcd=13l3lPl2l1l1&dma_cps=a&dma=1&tag_exp=0~115938466~115938468~117266400~117884344~118131810&apve=1&apvf=f&gap.gtb=1&apvc=1&tids=AW-11319840811&tid=AW-11319840811&tft=1776160434226&tfd=915
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/haqt6iy0yx2eNjU3YmEzMTZkMmI2YTI3YzdkNzc4MTUy/FFAXpGEpiGhBCJaI7-adGAwzGBI
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
142.251.153.119 , United States, ASN15169 (GOOGLE - Google LLC, US),
Reverse DNS
Software
/
Resource Hash

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers
api.js
challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/
Redirect Chain
  • https://challenges.cloudflare.com/turnstile/v0/api.js
  • https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.js
51 KB
17 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://challenges.cloudflare.com/turnstile/v0/g/b0a7532ac8ec/api.js
Requested by
Host: www.cyfrin.io
URL: https://www.cyfrin.io/
Protocol
H3
Server
104.18.95.41 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
9b3741226c0c1dfc6242b7e2505b701c87adc1f7e5169524113da4044ca83fc2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
Referer
https://www.cyfrin.io/

Response headers

cache-control
max-age=31536000, stale-if-error=10800, stale-while-revalidate=31536000, public
content-encoding
br
cross-origin-resource-policy
cross-origin
cf-ray
9ec1d37a5bb8160d-DUS
access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
application/javascript; charset=UTF-8
last-modified
Fri, 10 Apr 2026 10:35:24 GMT
server
cloudflare
priority
u=3,i=?0

Redirect headers

cache-control
max-age=300, stale-if-error=10800, stale-while-revalidate=300, public
location
/turnstile/v0/g/b0a7532ac8ec/api.js
cross-origin-resource-policy
cross-origin
cf-ray
9ec1d37a3ba3160d-DUS
access-control-allow-origin
*
alt-svc
h3=":443"; ma=86400
content-length
0
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
server
cloudflare
priority
u=3,i=?0
normal
challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/mx5b5/0x4AAAAAAAQTptj2So4dx43e/auto/fbE/new/ Frame EBB2 		0
0 		Document
General
Check archive.org
Download Go to
Full URL
https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/mx5b5/0x4AAAAAAAQTptj2So4dx43e/auto/fbE/new/normal?lang=auto
Requested by
Host: challenges.cloudflare.com
URL: https://challenges.cloudflare.com/turnstile/v0/api.js
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.95.41 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
Security Headers
Name Value
Content-Security-Policy default-src 'none'; script-src 'nonce-psd8510MXxJRSore' 'unsafe-eval'; script-src-attr 'none'; worker-src blob:; style-src 'unsafe-inline'; img-src 'self'; connect-src 'self'; frame-src 'self' blob:; child-src 'self' blob:; form-action 'none'; base-uri 'self'; sandbox allow-same-origin allow-scripts allow-popups allow-forms

Request headers

Referer
https://www.cyfrin.io/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0
sec-ch-ua-platform
"Linux"

Response headers

accept-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
alt-svc
h3=":443"; ma=86400
cache-control
private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
cf-ray
9ec1d37a9c898e0f-DUS
content-encoding
br
content-security-policy
default-src 'none'; script-src 'nonce-psd8510MXxJRSore' 'unsafe-eval'; script-src-attr 'none'; worker-src blob:; style-src 'unsafe-inline'; img-src 'self'; connect-src 'self'; frame-src 'self' blob:; child-src 'self' blob:; form-action 'none'; base-uri 'self'; sandbox allow-same-origin allow-scripts allow-popups allow-forms
content-type
text/html; charset=UTF-8
critical-ch
Sec-CH-UA-Bitness, Sec-CH-UA-Arch, Sec-CH-UA-Mobile, Sec-CH-UA-Model, Sec-CH-UA-Platform-Version, Sec-CH-UA-Full-Version-List, Sec-CH-UA-Platform, Sec-CH-UA, UA-Bitness, UA-Arch, UA-Full-Version, UA-Mobile, UA-Model, UA-Platform-Version, UA-Platform, UA
cross-origin-embedder-policy
require-corp
cross-origin-opener-policy
same-origin
cross-origin-resource-policy
cross-origin
date
Tue, 14 Apr 2026 09:53:54 GMT
document-policy
js-profiling
origin-agent-cluster
?1
permissions-policy
accelerometer=(),browsing-topics=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),interest-cohort=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=()
priority
u=0,i
referrer-policy
same-origin
server
cloudflare
server-timing
6tzmzjvg;dur=240855 cfExtPri
65b96a4fce538b992db26801_Favicon.png
cdn.prod.website-files.com/657ba316d2b6a27c7d778152/ 		1 KB
2 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://cdn.prod.website-files.com/657ba316d2b6a27c7d778152/65b96a4fce538b992db26801_Favicon.png
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.18.160.117 , Ascension Island, ASN13335 (CLOUDFLARENET - Cloudflare, Inc., US),
Reverse DNS
Software
cloudflare /
Resource Hash
6704f665aca96957f11424bef957437cec5757f7c2dac8979317a0f0f26bf85f

Request headers

sec-ch-ua-platform
"Linux"
Referer
https://www.cyfrin.io/
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/147.0.0.0 Safari/537.36
sec-ch-ua
"Chromium";v="147", "Google Chrome";v="147", "Not-A.Brand";v="24"
sec-ch-ua-mobile
?0

Response headers

cf-cache-status
HIT
etag
"b0d53094a7bb9847539bc2ede6d957d6"
x-amz-version-id
NgRO8xEU901h3r3uWRRBTQs5iN6jFwfL
age
12584656
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Tue, 14 Apr 2026 09:53:54 GMT
content-type
image/png
last-modified
Tue, 30 Jan 2024 21:29:52 GMT
vary
Accept-Encoding
priority
u=1,i
x-amz-id-2
zkjBXdcuKqB02J4H9EP5HMt4Nl+HqFkC+uKyQTzbZSDxB4bfvX5WlD5CitnsGqzBISztDzkUivo=
cache-control
max-age=31536000, must-revalidate
cf-ray
9ec1d37b09727a48-DUS
x-amz-request-id
KYGZD0X19DXRM663
accept-ranges
bytes
access-control-allow-origin
*
content-length
1167
server
cloudflare
x-amz-server-side-encryption
AES256

Verdicts & Comments Add Verdict or Comment

21 JavaScript Window variables

These are the non-standard variables defined on the window object. These include var declarations and global functions and can be helpful in identifying possible client-side frameworks and code.

object| WebFont object| google_tags_first_party function| gtag object| dataLayer function| twq string| JETBOOST_SITE_ID object| twttr function| $ function| jQuery object| webpackChunk function| tram object| Webflow function| jspbGetTypeName object| google_tag_manager_external object| google_tag_manager object| google_tag_data function| onYouTubeIframeAPIReady object| gaGlobal function| JetboostBootstrap object| Jetboost object| turnstile

13 Cookies

Domain/Path Name / Value
.cyfrin.io/ Name: _twpid
Value: tw.1776160434017.283438061376472183
.t.co/ Name: muc_ads
Value: 4f35a849-d514-445e-8114-353dfa78ef35
.cyfrin.io/ Name: _ga_4EYV1MDWQC
Value: GS2.1.s1776160434$o1$g0$t1776160434$j60$l0$h0$dr7iIkOFfR5a5ZOQCtQiLfPyug8j2au3RFw
.cyfrin.io/ Name: _ga
Value: GA1.1.665971148.1776160434
.cyfrin.io/ Name: _gcl_au
Value: 1.1.245008173.1776160434
.twitter.com/ Name: guest_id_marketing
Value: v1%3A177616043416946891
.twitter.com/ Name: guest_id_ads
Value: v1%3A177616043416946891
.twitter.com/ Name: personalization_id
Value: "v1_48eXnuUQIGdZXJ0GU7CRYQ=="
.twitter.com/ Name: guest_id
Value: v1%3A177616043416946891
.cyfrin.io/ Name: _cfuvid
Value: RyKmLmD_QcvfJmZ9918tnBCLbWd9jaiXOb8CDtjNaP8-1776160438787-0.0.1.1-604800000
.www.cyfrin.io/ Name: _cfuvid
Value: IiDFe2Bkb3NPUYIVTcU8zTrUaSMqfDeom7NU7fBI7SQ-1776160438.8012347-1.0.1.1-x9a1l7RTlExxbtXbtyH9yFb.j_56LpIe388MXj162Uw
cyfrin.typeform.com/ Name: AWSALBTG
Value: uAewjOOskG6u13gcEd/0YtclDVs489skiMdfrgPYPhhIPnG0wMaWj35b3AfCdovDjWVRgBWo5x++2TNsxz+2ad5exqNNOF/iBCrDS+N9xmdJN3FQ4yycoVfOE9dwBqyHKqoFoEE3LlEiPKvY5ubEKVM4dcGTDbjzoFpPAqg3EHaO
cyfrin.typeform.com/ Name: AWSALBTGCORS
Value: uAewjOOskG6u13gcEd/0YtclDVs489skiMdfrgPYPhhIPnG0wMaWj35b3AfCdovDjWVRgBWo5x++2TNsxz+2ad5exqNNOF/iBCrDS+N9xmdJN3FQ4yycoVfOE9dwBqyHKqoFoEE3LlEiPKvY5ubEKVM4dcGTDbjzoFpPAqg3EHaO

1 Console Messages

Source Level URL
Text
rendering error URL: https://www.cyfrin.io/(Line 244)
Message:
Error: <svg> attribute height: Expected length, "auto".

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header Value
Strict-Transport-Security max-age=31536000

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

ajax.googleapis.com
analytics.twitter.com
cdn.jetboost.io
cdn.prod.website-files.com
challenges.cloudflare.com
cyfrin.io
d3e54v103j8qbb.cloudfront.net
fonts.googleapis.com
fonts.gstatic.com
region1.google-analytics.com
rwj69h.csb.app
static.ads-twitter.com
t.co
www.cyfrin.io
www.google.com
www.googletagmanager.com
104.18.160.117
104.18.95.41
13.226.247.220
142.251.110.94
142.251.153.119
146.75.120.157
162.159.140.229
172.64.151.115
172.66.0.227
198.202.211.1
2001:4860:4802:34::36
2600:9000:223e:de00:1d:7a82:2900:93a1
2620:cb:2000::1
2a00:1450:4001:c13::5f
2a00:1450:4001:c17::61
2a00:1450:4001:c25::5f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6f9cbdc9207f4ab63fa99d0e7d7becae9414bc6b98bd83de44e2d1168dbf7cef
72892c90097f75cfc428e245b32066fdde2a91eabf23ac8792d1f6c0dd757a40
72e7478f5e1263e442d3fe111c24c195b7a9e48f570b58d7f88803bdda6718cc
7387fb19752d5525d81d1d3d1459b3dd2cbb41ae62804bee7ece101d5a69ccbb
75722033cd6a3d69e8646dbba588bd70fffb66464a010353837d5749afacde51
76609488b111185584901bfc205148d0303fe6629dbe8c21796df696382bbf0c
790f607f3827baab320a87f04dfdf36d787d6242ffb8f24e542d5e8640cd7aa0
7953410584f104bacb5ed82f47c4ddf362477c76cfb5a6a600c0fbaf23213974
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8b7d0de9f3df9103d70ed000c17b348240623ac4e4053d56fa0d5cfd8d74d79d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c3fc11b778d4949ea8bb289cdd1b183abba31d806add353d2b018c913554b3df
c4df4e8fddf28011c827822fe76b622aaacb63c18248b02ac34d34f6ce5848d2
cb4dadac38f04e45aca36578eab7fd96216af6542ebdca9b7768b25aacaf95cd
d5a362e4a9490634dd582588fb81c325a007b71017533fee8ff22e364ad59d04
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e739aff9b4d02c264341d6d4872edcda28e79373aeda936f659566a1cd3eb47f
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fac1718f8e9fcc9c4fafa24947dab5d3e86be4b4f5cd29f2e33b70c247e36722
fbabc4c1192b1ebba1f7bb94ee45ee7919c5e01ce27c4ddfd5557de863ff3ce1
ff1846fe7c9856c25f65121c4390a34c03b1de659fe657834f646e32467ee068