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computationstructures.org Open in urlscan Pro
185.199.109.153  Public Scan

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URL: https://computationstructures.org/notes/assembly/notes.html
Submission: On October 11 via api from US — Scanned from CA
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 7 IPs in 2 countries across 7 domains to perform 25 HTTP transactions. The main IP is 185.199.109.153, located in United States and belongs to FASTLY, US. The main domain is computationstructures.org.
TLS certificate: Issued by R13 on August 29th 2025. Valid for: 3 months.
This is the only time computationstructures.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
14 185.199.109.153 54113 (FASTLY)
1 142.251.16.97 15169 (GOOGLE)
4 104.17.25.14 13335 (CLOUDFLAR...)
1 142.251.163.95 15169 (GOOGLE)
2 64.233.180.101 15169 (GOOGLE)
1 172.67.72.172 13335 (CLOUDFLAR...)
2 64.233.180.94 15169 (GOOGLE)
25 7
14    185.199.109.153 (United States)

ASN54113 (FASTLY, US)
PTR: cdn-185-199-109-153.github.com
computationstructures.org
1    142.251.16.97 (United States)

ASN15169 (GOOGLE, US)
PTR: bl-in-f97.1e100.net
www.googletagmanager.com
4    104.17.25.14 (Ascension Island)

ASN13335 (CLOUDFLARENET, US)
cdnjs.cloudflare.com
1    142.251.163.95 (United States)

ASN15169 (GOOGLE, US)
PTR: wv-in-f95.1e100.net
fonts.googleapis.com
2    64.233.180.101 (United States)

ASN15169 (GOOGLE, US)
PTR: on-in-f101.1e100.net
www.google-analytics.com
1    172.67.72.172 (Ascension Island)

ASN13335 (CLOUDFLARENET, US)
cdn.mathjax.org
2    64.233.180.94 (United States)

ASN15169 (GOOGLE, US)
PTR: pe-in-f94.1e100.net
fonts.gstatic.com
Apex Domain
Subdomains		 Transfer
14 computationstructures.org
computationstructures.org
265 KB
4 cloudflare.com
cdnjs.cloudflare.com — Cisco Umbrella Rank: 242
108 KB
2 gstatic.com
fonts.gstatic.com
40 KB
2 google-analytics.com
www.google-analytics.com — Cisco Umbrella Rank: 65
1 mathjax.org
cdn.mathjax.org — Cisco Umbrella Rank: 45887
2 KB
1 googleapis.com
fonts.googleapis.com — Cisco Umbrella Rank: 50
2 KB
1 googletagmanager.com
www.googletagmanager.com — Cisco Umbrella Rank: 51
140 KB
25 7
Domain Requested by
14 computationstructures.org computationstructures.org
4 cdnjs.cloudflare.com computationstructures.org
cdnjs.cloudflare.com
2 fonts.gstatic.com fonts.googleapis.com
2 www.google-analytics.com www.googletagmanager.com
1 cdn.mathjax.org cdnjs.cloudflare.com
1 fonts.googleapis.com computationstructures.org
1 www.googletagmanager.com computationstructures.org
25 7

This site contains no links.

Subject Issuer Validity Valid
computationstructures.org
R13		 2025-08-29 -
2025-11-27		 3 months crt.sh
*.google-analytics.com
WR2		 2025-09-22 -
2025-12-15		 3 months crt.sh
cdnjs.cloudflare.com
WE1		 2025-09-17 -
2025-12-16		 3 months crt.sh
upload.video.google.com
WR2		 2025-09-22 -
2025-12-15		 3 months crt.sh
mathjax.org
WE1		 2025-10-10 -
2026-01-08		 3 months crt.sh
*.gstatic.com
WR2		 2025-09-22 -
2025-12-15		 3 months crt.sh

This page contains 1 frames:

Primary Page: https://computationstructures.org/notes/assembly/notes.html
Frame ID: 1DFFA6C015C01A657ED417A2C57C0F47
Requests: 25 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Assembly Language

Detected technologies

Overall confidence: 100%
Detected patterns
  • ([\d.]+)?/mathjax\.js
Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+(?:([\d.]+)/)?(?:css/)?font-awesome(?:\.min)?\.css
  • <link[^>]* href=[^>]*?(?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
  • (?:F|f)o(?:n|r)t-?(?:A|a)wesome(?:.*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)
Overall confidence: 100%
Detected patterns
Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com
Overall confidence: 100%
Detected patterns
  • googletagmanager\.com/gtag/js
Overall confidence: 100%
Detected patterns
  • jquery[.-]([\d.]*\d)[^/]*\.js
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

25
Requests

100 %
HTTPS

0 %
IPv6

7
Domains

7
Subdomains

7
IPs

2
Countries

556 kB
Transfer

1329 kB
Size

2
Cookies

Redirected requests

There were HTTP redirect chains for the following requests:

25 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request notes.html
computationstructures.org/notes/assembly/ 		42 KB
13 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
2da7428d32e19c91e8e2addb467dc2a2cf51cd23f194fbf320f35a039b713428

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
access-control-allow-origin
*
age
0
cache-control
max-age=600
content-encoding
gzip
content-length
13377
content-type
text/html; charset=utf-8
date
Sat, 11 Oct 2025 18:04:55 GMT
etag
W/"647950fe-a927"
expires
Sat, 11 Oct 2025 18:14:54 GMT
last-modified
Fri, 02 Jun 2023 02:16:30 GMT
server
GitHub.com
vary
Accept-Encoding
via
1.1 varnish
x-cache
MISS
x-cache-hits
0
x-fastly-request-id
1020b3cc943f9841c8cb866eaa5051d94b41a4e6
x-github-request-id
509E:37B282:13521DC:14FD695:68EA9C3F
x-origin-cache
HIT
x-proxy-cache
MISS
x-served-by
cache-yvr1530-YVR
x-timer
S1760205895.926418,VS0,VE94
js
www.googletagmanager.com/gtag/ 		409 KB
140 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://www.googletagmanager.com/gtag/js?id=G-WB1KGP4SW3
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
142.251.16.97 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
bl-in-f97.1e100.net
Software
Google Tag Manager /
Resource Hash
03365a291e51eaa71ce683de9f68615cf9fa76db626b3147f7e17988300865b3
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/

Response headers

strict-transport-security
max-age=31536000; includeSubDomains
cache-control
private, max-age=900
content-encoding
zstd
cross-origin-resource-policy
cross-origin
access-control-allow-credentials
true
expires
Sat, 11 Oct 2025 18:04:55 GMT
access-control-allow-origin
*
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
content-length
142762
date
Sat, 11 Oct 2025 18:04:55 GMT
x-xss-protection
0
content-type
application/javascript; charset=UTF-8
vary
Accept-Encoding
server
Google Tag Manager
access-control-allow-headers
Cache-Control
MathJax.js
cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/ 		62 KB
17 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js?config=TeX-MML-AM_CHTML
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.17.25.14 , Ascension Island, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
c987e781b10abf844435f183bcd52a253a8615c29fdf534911ef4e4e79cc1f76
Security Headers
Name Value
Strict-Transport-Security max-age=15780000
X-Content-Type-Options nosniff

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/

Response headers

cf-cdnjs-via
cfworker/kv
content-encoding
br
cf-cache-status
HIT
etag
"5eb03f12-f66b"
age
621448
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=mQuawIMMCR4F8YE%2F%2FLRBym2iB0xQNtVvS%2FBQGc%2B7mRe2CYZ%2ByzdkdgBeeIW4BGKRe8gDQsTQMXxZaualOCR45UP0WLUJ5XK5VquWxkXGQPOM0vZWRtfn8uO8DcsmuwBFxeyrEJrg"}],"group":"cf-nel","max_age":604800}
x-content-type-options
nosniff
expires
Thu, 01 Oct 2026 18:04:55 GMT
alt-svc
h3=":443"; ma=86400
server-timing
cfExtPri
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
application/javascript; charset=utf-8
last-modified
Mon, 04 May 2020 16:13:06 GMT
vary
Accept-Encoding
priority
u=3,i=?0
strict-transport-security
max-age=15780000
cache-control
public, max-age=30672000
timing-allow-origin
*
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
cross-origin-resource-policy
cross-origin
cf-ray
98d0485cf8a48e8e-SEA
accept-ranges
bytes
access-control-allow-origin
*
content-length
16916
server
cloudflare
css2
fonts.googleapis.com/ 		26 KB
2 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:ital@0;1&family=IBM+Plex+Sans+Condensed:ital@0;1&family=IBM+Plex+Sans:ital,wght@0,100;0,400;0,700;1,100;1,400;1,700&family=IBM+Plex+Serif:ital@0;1&display=swap
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
142.251.163.95 , United States, ASN15169 (GOOGLE, US),
Reverse DNS
wv-in-f95.1e100.net
Software
ESF /
Resource Hash
4de3affd872f796bf49657e4c79778e3389a83818c16773802cd584f2dd48cd0
Security Headers
Name Value
Strict-Transport-Security max-age=31536000
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/

Response headers

content-encoding
gzip
x-content-type-options
nosniff
expires
Sat, 11 Oct 2025 18:04:56 GMT
alt-svc
h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
date
Sat, 11 Oct 2025 18:04:56 GMT
content-type
text/css; charset=utf-8
vary
Sec-Fetch-Dest, Sec-Fetch-Mode, Sec-Fetch-Site
last-modified
Sat, 11 Oct 2025 17:58:21 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
jquery-3.2.1.min.js
computationstructures.org/tools/ 		85 KB
30 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/tools/jquery-3.2.1.min.js
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
87083882cc6015984eb0411a99d3981817f5dc5c90ba24f0940420c5548d82de

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
97151450c24c46be77da8931199a46c9f8388aaa
content-encoding
gzip
etag
W/"647950f7-15283"
age
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x-github-request-id
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expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
application/javascript; charset=utf-8
last-modified
Fri, 02 Jun 2023 02:16:23 GMT
x-served-by
cache-yvr1530-YVR
x-cache-hits
0
vary
Accept-Encoding
cache-control
max-age=600
x-timer
S1760205895.114532,VS0,VE187
via
1.1 varnish
accept-ranges
bytes
access-control-allow-origin
*
content-length
30388
x-origin-cache
HIT
server
GitHub.com
font-awesome.css
computationstructures.org/tools/ 		28 KB
6 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/tools/font-awesome.css
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
10e7af615224167847b3d9c4940e2776fc9913d3
content-encoding
gzip
etag
W/"647950f7-7015"
age
0
x-github-request-id
58E6:18E609:13A631A:1550B6C:68EA9C44
expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
text/css; charset=utf-8
last-modified
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x-served-by
cache-yvr1530-YVR
x-cache-hits
0
vary
Accept-Encoding
cache-control
max-age=600
x-timer
S1760205895.113555,VS0,VE96
via
1.1 varnish
accept-ranges
bytes
access-control-allow-origin
*
content-length
5773
x-origin-cache
HIT
server
GitHub.com
workbook.css
computationstructures.org/tools/ 		20 KB
4 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/tools/workbook.css
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
a56eba2c47264f80a27c553da52e0fa8bc9c212f
content-encoding
gzip
etag
W/"647950f8-4f14"
age
0
x-github-request-id
D0AF:2040AB:13908BE:153BB81:68EA9C40
expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
text/css; charset=utf-8
last-modified
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x-served-by
cache-yvr1530-YVR
x-cache-hits
0
vary
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cache-control
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x-timer
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via
1.1 varnish
accept-ranges
bytes
access-control-allow-origin
*
content-length
3834
x-origin-cache
HIT
server
GitHub.com
workbook.js
computationstructures.org/tools/ 		6 KB
2 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/tools/workbook.js
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
b70295084c6d29a94bf9a54d7bd68dac224b5f25
content-encoding
gzip
etag
W/"647950f8-1783"
age
0
x-github-request-id
D0AE:19E1DB:1283B0B:142F23F:68EA9C41
expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
application/javascript; charset=utf-8
last-modified
Fri, 02 Jun 2023 02:16:24 GMT
x-served-by
cache-yvr1530-YVR
x-cache-hits
0
vary
Accept-Encoding
cache-control
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x-timer
S1760205895.114434,VS0,VE102
via
1.1 varnish
accept-ranges
bytes
access-control-allow-origin
*
content-length
1949
x-origin-cache
HIT
server
GitHub.com
answers.js
computationstructures.org/tools/ 		52 KB
12 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://computationstructures.org/tools/answers.js
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
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Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
edd2b94b0a25a88d4ce744936818722a2e59855b
content-encoding
gzip
etag
W/"647950f7-d109"
age
0
x-github-request-id
BC94:18148F:13BE4B1:1568BC4:68EA9C45
expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
application/javascript; charset=utf-8
last-modified
Fri, 02 Jun 2023 02:16:23 GMT
x-served-by
cache-yvr1530-YVR
x-cache-hits
0
vary
Accept-Encoding
cache-control
max-age=600
x-timer
S1760205895.114407,VS0,VE79
via
1.1 varnish
accept-ranges
bytes
access-control-allow-origin
*
content-length
12539
x-origin-cache
HIT
server
GitHub.com
title.gif
computationstructures.org/ 		5 KB
5 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://computationstructures.org/title.gif
Requested by
Host: computationstructures.org
URL: https://computationstructures.org/notes/assembly/notes.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
185.199.109.153 , United States, ASN54113 (FASTLY, US),
Reverse DNS
cdn-185-199-109-153.github.com
Software
GitHub.com /
Resource Hash
dd6cef8507eb93bea3d35e8438100e12e018f37a45f3db5cba164e9c22ade6af

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36
Referer
https://computationstructures.org/notes/assembly/notes.html

Response headers

x-fastly-request-id
246e004f0fd692bb0853137dafe1a347c82576b6
etag
"647950f7-1413"
age
0
x-github-request-id
F2D2:2040AB:13908BE:153BB80:68EA9C46
expires
Sat, 11 Oct 2025 18:14:55 GMT
x-proxy-cache
MISS
x-cache
MISS
date
Sat, 11 Oct 2025 18:04:55 GMT
content-type
image/gif
last-modified
Fri, 02 Jun 2023 02:16:23 GMT
x-served-by
cache-yvr1530-YVR
x-cache-hits
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QUIC, , AES_128_GCM
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cfworker/kv
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Protocol
H3
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H2
Security
TLS 1.3, , AES_128_GCM
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pragma
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Verdicts & Comments Add Verdict or Comment

11 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.

function| gtag object| dataLayer object| MathJax object| google_tag_manager object| google_tag_data function| onYouTubeIframeAPIReady object| gaGlobal function| $ function| jQuery object| workbook function| google_drive_api_ready

2 Cookies

Domain/Path Name / Value
.computationstructures.org/ Name: _ga
Value: GA1.1.1275516206.1760205896
.computationstructures.org/ Name: _ga_WB1KGP4SW3
Value: GS2.1.s1760205896$o1$g0$t1760205896$j60$l0$h0

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.

cdn.mathjax.org
cdnjs.cloudflare.com
computationstructures.org
fonts.googleapis.com
fonts.gstatic.com
www.google-analytics.com
www.googletagmanager.com
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