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systemdesignschool.io Open in urlscan Pro
76.76.21.21  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://systemdesignschool.io/
Effective URL: https://systemdesignschool.io/
Submission: On December 28 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 11 IPs in 4 countries across 9 domains to perform 49 HTTP transactions. The main IP is 76.76.21.21, located in Walnut, United States and belongs to AMAZON-02, US. The main domain is systemdesignschool.io.
TLS certificate: Issued by R3 on November 11th 2023. Valid for: 3 months.
This is the only time systemdesignschool.io was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 37 76.76.21.21 16509 (AMAZON-02)
3 2a00:1450:400... 15169 (GOOGLE)
1 2a00:1450:400... 15169 (GOOGLE)
1 18.161.111.39 16509 (AMAZON-02)
1 2a00:1450:400... 15169 (GOOGLE)
1 13.227.219.71 16509 (AMAZON-02)
1 2001:4860:480... 15169 (GOOGLE)
1 54.194.181.161 16509 (AMAZON-02)
2 2606:4700::68... 13335 (CLOUDFLAR...)
2 52.40.254.121 16509 (AMAZON-02)
49 11
37    76.76.21.21 (Walnut, United States)

ASN16509 (AMAZON-02, US)
systemdesignschool.io
3    2a00:1450:400c:c09::54 (Brussels, Belgium)

ASN15169 (GOOGLE, US)
accounts.google.com
1    2a00:1450:4001:80f::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googletagmanager.com
1    18.161.111.39 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-161-111-39.mrs52.r.cloudfront.net
static.hotjar.com
1    2a00:1450:4001:827::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)
www.googleapis.com
1    13.227.219.71 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-13-227-219-71.ams54.r.cloudfront.net
script.hotjar.com
1    2001:4860:4802:34::36 (United States)

ASN15169 (GOOGLE, US)
region1.google-analytics.com
1    54.194.181.161 (Dublin, Ireland)

ASN16509 (AMAZON-02, US)
PTR: ec2-54-194-181-161.eu-west-1.compute.amazonaws.com
content.hotjar.io
2    2606:4700::6810:7aaf (United States)

ASN13335 (CLOUDFLARENET, US)
unpkg.com
2    52.40.254.121 (Boardman, United States)

ASN16509 (AMAZON-02, US)
PTR: ec2-52-40-254-121.us-west-2.compute.amazonaws.com
api2.amplitude.com
Apex Domain
Subdomains		 Transfer
37 systemdesignschool.io
systemdesignschool.io
2 MB
3 google.com
accounts.google.com — Cisco Umbrella Rank: 23
81 KB
2 amplitude.com
api2.amplitude.com — Cisco Umbrella Rank: 1294
309 B
2 unpkg.com
unpkg.com — Cisco Umbrella Rank: 857
811 KB
2 hotjar.com
static.hotjar.com — Cisco Umbrella Rank: 700
script.hotjar.com — Cisco Umbrella Rank: 933
60 KB
1 hotjar.io
content.hotjar.io — Cisco Umbrella Rank: 6459
161 B
1 google-analytics.com
region1.google-analytics.com — Cisco Umbrella Rank: 2189
257 B
1 googleapis.com
www.googleapis.com — Cisco Umbrella Rank: 22
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 36
78 KB
49 9
Domain Requested by
37 systemdesignschool.io 1 redirects systemdesignschool.io
3 accounts.google.com systemdesignschool.io
accounts.google.com
2 api2.amplitude.com systemdesignschool.io
2 unpkg.com systemdesignschool.io
1 content.hotjar.io script.hotjar.com
1 region1.google-analytics.com www.googletagmanager.com
1 script.hotjar.com static.hotjar.com
1 www.googleapis.com systemdesignschool.io
1 static.hotjar.com systemdesignschool.io
1 www.googletagmanager.com systemdesignschool.io
49 10

This site contains links to these domains. Also see Links.

Domain
discord.gg
Subject Issuer Validity Valid
systemdesignschool.io
R3		 2023-11-11 -
2024-02-09		 3 months crt.sh
accounts.google.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.google-analytics.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.hotjar.com
Amazon ECDSA 256 M01		 2023-03-09 -
2024-04-06		 a year crt.sh
upload.video.google.com
GTS CA 1C3		 2023-11-20 -
2024-02-12		 3 months crt.sh
*.hotjar.io
Amazon ECDSA 256 M02		 2023-03-02 -
2024-03-30		 a year crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3		 2023-05-02 -
2024-05-01		 a year crt.sh
*.amplitude.com
COMODO RSA Domain Validation Secure Server CA		 2023-01-23 -
2024-02-14		 a year crt.sh

This page contains 1 frames:

Primary Page: https://systemdesignschool.io/
Frame ID: C115B443136AE9C40E26AF8DFDFA6E90
Requests: 51 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Ace Your System Design Interview - Learn with System Design School

Page URL History Show full URLs

  1. http://systemdesignschool.io/ HTTP 308
    https://systemdesignschool.io/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • accounts\.google\.com/gsi/client
Overall confidence: 100%
Detected patterns
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • //static\.hotjar\.com/

Page Statistics

49
Requests

100 %
HTTPS

50 %
IPv6

9
Domains

10
Subdomains

11
IPs

4
Countries

2882 kB
Transfer

7985 kB
Size

9
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. http://systemdesignschool.io/ HTTP 308
    https://systemdesignschool.io/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

49 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
systemdesignschool.io/
Redirect Chain
  • http://systemdesignschool.io/
  • https://systemdesignschool.io/
76 KB
15 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
eb4b102c6ac409d5070b32dcaf5d6a81709e0719f67e9cbb4db902344b291cf5
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

access-control-allow-origin
*
age
19393
cache-control
public, max-age=0, must-revalidate
content-disposition
inline
content-encoding
br
content-type
text/html; charset=utf-8
date
Thu, 28 Dec 2023 17:33:25 GMT
etag
W/"bc88ee31f2788ddc4dd4f25555a8a24b"
server
Vercel
strict-transport-security
max-age=63072000
vary
RSC, Next-Router-State-Tree, Next-Router-Prefetch
x-matched-path
/
x-vercel-cache
HIT
x-vercel-id
fra1::vdm2v-1703784804791-a15bc70a92a4

Redirect headers

Content-Type
text/plain
Location
https://systemdesignschool.io/
Refresh
0;url=https://systemdesignschool.io/
server
Vercel
fecf14742927593b.css
systemdesignschool.io/_next/static/css/ 		189 KB
31 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/css/fecf14742927593b.css
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
20ce96b92625f9e593c115738af1879e2a9aec9e17dbd4dab6935065b382319b
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::p5cm5-1703784805208-dea4920e18ab
age
0
x-matched-path
/_next/static/css/fecf14742927593b.css
etag
W/"46e0ad31d2dd206e6cb4e0fe2ec8c127"
x-vercel-cache
HIT
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="fecf14742927593b.css"
2091faa1f9c099e3.css
systemdesignschool.io/_next/static/css/ 		13 KB
3 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/css/2091faa1f9c099e3.css
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
04034ac132588de5c592e62a872441363de909a6f67029246d538d4bedeaa05a
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::fbvvr-1703784805208-d7b9e50d466c
age
0
x-matched-path
/_next/static/css/2091faa1f9c099e3.css
etag
W/"e07378785fc76a34db9c611d3115c40b"
x-vercel-cache
HIT
content-type
text/css; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="2091faa1f9c099e3.css"
webpack-8fbfe3cd206b5898.js
systemdesignschool.io/_next/static/chunks/ 		6 KB
3 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/webpack-8fbfe3cd206b5898.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
8e2ea852fe555513bf33a105b59057e837895847e40f9a47174c68ead5232f18
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::h7l2q-1703784805226-9e6efa101839
age
0
x-matched-path
/_next/static/chunks/webpack-8fbfe3cd206b5898.js
etag
W/"12b919e43f315c1013e73f44ad3c9888"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="webpack-8fbfe3cd206b5898.js"
framework-2fe4cb6473b20297.js
systemdesignschool.io/_next/static/chunks/ 		138 KB
46 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/framework-2fe4cb6473b20297.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
453ca013615baa4212000cc41322a6596b3051cd322065f4f30d20c7600b8b4d
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::7kxzr-1703784805226-776f3b6ad9c6
age
0
x-matched-path
/_next/static/chunks/framework-2fe4cb6473b20297.js
etag
W/"4ec7e92b2e0b29b7b50732a212e10d92"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="framework-2fe4cb6473b20297.js"
main-27c6f5da05307129.js
systemdesignschool.io/_next/static/chunks/ 		86 KB
28 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/main-27c6f5da05307129.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
11f8830f4dd23cd408ba9d47b2fc35cdf4fae29824f7e2930b0f95b3863b0c24
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::2jqld-1703784805226-031add9a9b99
age
0
x-matched-path
/_next/static/chunks/main-27c6f5da05307129.js
etag
W/"cea7927ffeafc0999a3d0dba1ae31e74"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="main-27c6f5da05307129.js"
_app-279f7c69075ef669.js
systemdesignschool.io/_next/static/chunks/pages/ 		383 KB
90 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/pages/_app-279f7c69075ef669.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
ca83825059d944cecd1394010eb8a8679e5bdd9dc8a07db5fa0725c7f0c2521b
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::5gwhr-1703784805227-521fed3299fe
age
0
x-matched-path
/_next/static/chunks/pages/_app-279f7c69075ef669.js
etag
W/"58be3858b2b34bb53f8cbb83475ab315"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="_app-279f7c69075ef669.js"
256-0e36a5e021347668.js
systemdesignschool.io/_next/static/chunks/ 		17 KB
6 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/256-0e36a5e021347668.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
be4a01c127365ada00705ec921c78ca118ea5fd754d99cc697e236eee1cd47e3
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::l9zxw-1703784805227-0874a7d03ab1
age
0
x-matched-path
/_next/static/chunks/256-0e36a5e021347668.js
etag
W/"def346552afbe1369e3afd644fd80a74"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="256-0e36a5e021347668.js"
9495-c9803f8c6bbfdbbc.js
systemdesignschool.io/_next/static/chunks/ 		62 KB
23 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/9495-c9803f8c6bbfdbbc.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
2c5af65619305983ef9d6566e5335180251223d14ab78f6a385de33e94aedbc6
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::ztd84-1703784805226-b9fe65b85410
age
0
x-matched-path
/_next/static/chunks/9495-c9803f8c6bbfdbbc.js
etag
W/"2db2d0fa4320690df463bb7347644ca3"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="9495-c9803f8c6bbfdbbc.js"
1664-5178a426216181f4.js
systemdesignschool.io/_next/static/chunks/ 		5 KB
2 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/1664-5178a426216181f4.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
Vercel /
Resource Hash
f11daa330716dafa46dc914739ef5b159962e898b8617222989f93107c2648b1
Security Headers
Name Value
Strict-Transport-Security max-age=63072000

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:25 GMT
content-encoding
br
strict-transport-security
max-age=63072000
server
Vercel
x-vercel-id
fra1::z8zdh-1703784805226-fb9e28d5531b
age
0
x-matched-path
/_next/static/chunks/1664-5178a426216181f4.js
etag
W/"f516091480caabc68092f032d7ab7a32"
x-vercel-cache
HIT
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
public,max-age=31536000,immutable
content-disposition
inline; filename="1664-5178a426216181f4.js"
index-73cb67d35f867bae.js
systemdesignschool.io/_next/static/chunks/pages/ 		21 KB
8 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://systemdesignschool.io/_next/static/chunks/pages/index-73cb67d35f867bae.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
76.76.21.21 Walnut, United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
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H2
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TLS 1.3, , AES_128_GCM
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Response headers

date
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strict-transport-security
max-age=63072000
server
Vercel
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fra1::pzxlb-1703784805581-064b28506702
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www.googleapis.com/ 		0
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https://www.googleapis.com/
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/_next/static/chunks/pages/index-73cb67d35f867bae.js
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H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:4001:827::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
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Software
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Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers
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55 KB 		Script
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https://script.hotjar.com/modules.618aa075c4d9b6424e07.js
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Host: static.hotjar.com
URL: https://static.hotjar.com/c/hotjar-3669179.js?sv=6
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H2
Security
TLS 1.3, , AES_128_GCM
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accept-language
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https://systemdesignschool.io/
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date
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content-encoding
br
x-content-type-options
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https://region1.google-analytics.com/g/collect?v=2&tid=G-YHQ1QT60RP&gtm=45je3bt0v9164257231&_p=1703784805496&gcd=11l1l1l1l1&dma_cps=sypham&dma=1&cid=1436578574.1703784806&ul=en-us&sr=1600x1200&uaa=&uab=&uafvl=&uamb=0&uam=&uap=&uapv=&uaw=0&ngs=1&_s=1&dp=%2F&sid=1703784805&sct=1&seg=0&dl=https%3A%2F%2Fsystemdesignschool.io%2F&dt=Ace%20Your%20System%20Design%20Interview%20-%20Learn%20with%20System%20Design%20School&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=1039
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accept-language
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Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

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pragma
no-cache
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server
Golfe2
content-type
text/plain
access-control-allow-origin
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cache-control
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content-length
0
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/
content.hotjar.io/ 		56 B
161 B 		XHR
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Full URL
https://content.hotjar.io/?gzip=1
Requested by
Host: script.hotjar.com
URL: https://script.hotjar.com/modules.618aa075c4d9b6424e07.js
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H2
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TLS 1.2, ECDHE_ECDSA, AES_128_GCM
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accept-language
de-DE,de;q=0.9
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text/plain; charset=UTF-8

Response headers

access-control-allow-origin
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content-length
56
vary
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content-type
application/json
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791 KB 		Script
General
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https://unpkg.com/@excalidraw/excalidraw@0.17.0/dist/excalidraw-assets/vendor-677e88ca78c86bddf13d.js
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/_next/static/chunks/a4bb5219.e94689c872aa2859.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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Request headers

accept-language
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Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
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via
1.1 fly.io
x-content-type-options
nosniff
cf-cache-status
HIT
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br
strict-transport-security
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cloudflare
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data:truncated
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DATA
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accept-language
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User-Agent
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Content-Type
image/svg+xml
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0 		Image
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data:truncated
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DATA
Server
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accept-language
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User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Content-Type
image/svg+xml
truncated
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0 		Image
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Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
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accept-language
de-DE,de;q=0.9
Referer
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

Content-Type
image/svg+xml
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20 KB 		Font
General
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https://unpkg.com/@excalidraw/excalidraw@0.17.0/dist/excalidraw-assets/Assistant-Medium.woff2
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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2606:4700::6810:7aaf , United States, ASN13335 (CLOUDFLARENET, US),
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Name Value
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Referer
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https://systemdesignschool.io
accept-language
de-DE,de;q=0.9
User-Agent
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Response headers

date
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via
1.1 fly.io
x-content-type-options
nosniff
cf-cache-status
HIT
strict-transport-security
max-age=31536000; includeSubDomains; preload
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fly-request-id
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cf-ray
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httpapi
api2.amplitude.com/2/ 		0
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General
Check archive.org
Download Go to
Full URL
https://api2.amplitude.com/2/httpapi
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.40.254.121 Boardman, United States, ASN16509 (AMAZON-02, US),
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ec2-52-40-254-121.us-west-2.compute.amazonaws.com
Software
/
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Security Headers
Name Value
Strict-Transport-Security max-age=15768000

Request headers

Accept
*/*
Access-Control-Request-Headers
content-type
Access-Control-Request-Method
POST
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https://systemdesignschool.io
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cors
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

access-control-allow-headers
content-type
access-control-allow-methods
GET, POST
access-control-allow-origin
*
access-control-max-age
86400
content-length
0
date
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strict-transport-security
max-age=15768000
httpapi
api2.amplitude.com/2/ 		94 B
309 B 		Fetch
General
Check archive.org
Download Go to
Full URL
https://api2.amplitude.com/2/httpapi
Requested by
Host: systemdesignschool.io
URL: https://systemdesignschool.io/_next/static/chunks/pages/_app-279f7c69075ef669.js
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
52.40.254.121 Boardman, United States, ASN16509 (AMAZON-02, US),
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ec2-52-40-254-121.us-west-2.compute.amazonaws.com
Software
/
Resource Hash
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Security Headers
Name Value
Strict-Transport-Security max-age=15768000

Request headers

Accept
*/*
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https://systemdesignschool.io/
accept-language
de-DE,de;q=0.9
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36
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Response headers

date
Thu, 28 Dec 2023 17:33:27 GMT
strict-transport-security
max-age=15768000
access-control-max-age
86400
access-control-allow-methods
GET, POST
content-type
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*
trace-id
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content-length
94
style
accounts.google.com/gsi/ 		533 B
608 B 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://accounts.google.com/gsi/style
Requested by
Host: accounts.google.com
URL: https://accounts.google.com/gsi/client
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2a00:1450:400c:c09::54 Brussels, Belgium, ASN15169 (GOOGLE, US),
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Software
ESF /
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Security Headers
Name Value
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X-Content-Type-Options nosniff
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X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:26 GMT
content-security-policy
require-trusted-types-for 'script';report-uri https://csp.withgoogle.com/csp/identity-sign-in-google-http, script-src 'report-sample' 'nonce-XTV1KYz_pjf2a7ZQeuPeqA' 'unsafe-inline' 'strict-dynamic' https: http: 'unsafe-eval';object-src 'none';base-uri 'self';report-uri https://csp.withgoogle.com/csp/identity-sign-in-google-http
content-encoding
gzip
x-content-type-options
nosniff
server
ESF
x-frame-options
SAMEORIGIN
report-to
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content-type
text/css; charset=utf-8
cache-control
private, max-age=86400
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
0
cross-origin-opener-policy-report-only
same-origin; report-to="coop_dd7de8473bddc59c6b748810a67a39b1"
expires
Thu, 28 Dec 2023 17:33:26 GMT
status
accounts.google.com/gsi/ 		40 B
529 B 		XHR
General
Check archive.org
Download Go to
Full URL
https://accounts.google.com/gsi/status?client_id=550278112493-ut9bdno5ef4t8iipra8lsg6coqtjpdot.apps.googleusercontent.com&as=cxB1qdDtuJqFFgWMrHK6fQ
Requested by
Host: accounts.google.com
URL: https://accounts.google.com/gsi/client
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
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2a00:1450:400c:c09::54 Brussels, Belgium, ASN15169 (GOOGLE, US),
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ESF /
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Name Value
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X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://systemdesignschool.io/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.109 Safari/537.36

Response headers

date
Thu, 28 Dec 2023 17:33:26 GMT
content-security-policy
script-src 'report-sample' 'nonce-VWDHrdp5pUFsj0z2tRDMOA' 'unsafe-inline' 'strict-dynamic' https: http: 'unsafe-eval';object-src 'none';base-uri 'self';report-uri https://csp.withgoogle.com/csp/identity-sign-in-google-http, require-trusted-types-for 'script';report-uri https://csp.withgoogle.com/csp/identity-sign-in-google-http
x-content-type-options
nosniff
content-encoding
gzip
content-disposition
attachment; filename="json.txt"; filename*=UTF-8''json.txt
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
x-xss-protection
0
pragma
no-cache
server
ESF
x-frame-options
SAMEORIGIN
access-control-allow-methods
GET
content-type
application/json; charset=utf-8
access-control-allow-origin
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report-to
{"group":"coop_dd7de8473bddc59c6b748810a67a39b1","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/dd7de8473bddc59c6b748810a67a39b1"}]}
cache-control
no-cache, no-store, max-age=0, must-revalidate
access-control-allow-credentials
true
cross-origin-opener-policy-report-only
same-origin; report-to="coop_dd7de8473bddc59c6b748810a67a39b1"
expires
Mon, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

35 JavaScript Global Variables

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

object| 0 object| documentPictureInPicture object| webpackChunk_N_E function| __next_require__ object| next object| __NEXT_DATA__ function| __SSG_MANIFEST_CB object| __NEXT_P object| _N_E function| __NEXT_PRELOADREADY object| __MIDDLEWARE_MATCHERS object| __BUILD_MANIFEST object| __SSG_MANIFEST function| gtag object| dataLayer string| vam function| va function| hj object| _hjSettings object| analyticsConnectorInstances boolean| vai object| hjSiteSettings function| hjBootstrap object| hjBootstrapCalled object| hjLazyModules object| google_tag_manager object| google_tag_data object| gaGlobal object| default_gsi object| _F_toggles object| google object| closure_lm_863346 object| webpackChunkExcalidrawLib object| regeneratorRuntime object| __G_ID_CLIENT__

9 Cookies

Domain/Path Name / Value
.systemdesignschool.io/ Name: AMP_MKTG_6ee18ca0da
Value: JTdCJTdE
.systemdesignschool.io/ Name: AMP_6ee18ca0da
Value: JTdCJTIyZGV2aWNlSWQlMjIlM0ElMjIyMzNlOGUwZS0xYzE3LTRmZmYtYWU4ZS00YzlkMzUwZjIwYzAlMjIlMkMlMjJzZXNzaW9uSWQlMjIlM0ExNzAzNzg0ODA1NTAyJTJDJTIyb3B0T3V0JTIyJTNBZmFsc2UlMkMlMjJsYXN0RXZlbnRUaW1lJTIyJTNBMTcwMzc4NDgwNTUwOSUyQyUyMmxhc3RFdmVudElkJTIyJTNBMiU3RA==
.systemdesignschool.io/ Name: _ga_YHQ1QT60RP
Value: GS1.1.1703784805.1.0.1703784805.0.0.0
.systemdesignschool.io/ Name: _ga
Value: GA1.1.1436578574.1703784806
.systemdesignschool.io/ Name: _hjFirstSeen
Value: 1
.systemdesignschool.io/ Name: _hjIncludedInSessionSample_3669179
Value: 1
.systemdesignschool.io/ Name: _hjSessionUser_3669179
Value: eyJpZCI6ImFlODQ0ZmM4LTE2ODMtNWJkOS1iZmYxLWQ2ZDQxYTExNTg0ZSIsImNyZWF0ZWQiOjE3MDM3ODQ4MDU3NDMsImV4aXN0aW5nIjp0cnVlfQ==
.systemdesignschool.io/ Name: _hjAbsoluteSessionInProgress
Value: 0
.systemdesignschool.io/ Name: _hjSession_3669179
Value: eyJpZCI6ImI0NDc3M2IwLTg5MzUtNDcxNy05ZjUxLTAwZDEzMTY1Nzk1MiIsImMiOjE3MDM3ODQ4MDU3NDMsInMiOjEsInIiOjEsInNiIjoxfQ==

1 Console Messages

Source Level URL
Text
network error URL: https://www.googleapis.com/
Message:
Failed to load resource: the server responded with a status of 404 ()

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=63072000

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.

accounts.google.com
api2.amplitude.com
content.hotjar.io
region1.google-analytics.com
script.hotjar.com
static.hotjar.com
systemdesignschool.io
unpkg.com
www.googleapis.com
www.googletagmanager.com
13.227.219.71
18.161.111.39
2001:4860:4802:34::36
2606:4700::6810:7aaf
2a00:1450:4001:80f::2008
2a00:1450:4001:827::200a
2a00:1450:400c:c09::54
52.40.254.121
54.194.181.161
76.76.21.21
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1e6cff265c59fb69f4b649fcd9abcc97cfc217b637c06a15d193317dc3067e95
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4d79f43454c56272040d7b196148f0642c963af0b20e554e10072a167f03933a
4ebd1d5d88941236aff6d438cf0e3e95f498330a98236c023ff82723d5c2cfdf
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520f64ee4f9d5e13fd5238c25339e33cb55ba4e333d4c280dc2fd2f2bf7ec8cb
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8e2ea852fe555513bf33a105b59057e837895847e40f9a47174c68ead5232f18
8e496e2d4d71d85c73c114ed5473d34c27c83a2344b6f036327b955e5ab0f260
9bd184c22b8f1094b57951b82d457d0f878ea8aa2d0060ea5f10cd4234f906b2
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9f9914d2bb7b767ce4abf87ab8ddabe3f2fec9bf0a408d3b9fa8574fa4cd11c3
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f1759dae8b5a6386ccf52c000efefe03e3b568dbeec6524f8d4801cbd4762bce
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