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cdn.cs50.net Open in urlscan Pro
108.138.36.50  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://cdn.cs50.net/
Effective URL: https://cdn.cs50.net/
Submission: On April 11 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 3 IPs in 2 countries across 3 domains to perform 6 HTTP transactions. The main IP is 108.138.36.50, located in United States and belongs to AMAZON-02, US. The main domain is cdn.cs50.net.
TLS certificate: Issued by Amazon RSA 2048 M03 on November 24th 2023. Valid for: a year.
This is the only time cdn.cs50.net was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
1 108.138.36.50 16509 (AMAZON-02)
4 104.16.85.20 13335 (CLOUDFLAR...)
1 2600:9000:26d... 16509 (AMAZON-02)
6 3
Apex Domain
Subdomains		 Transfer
4 jsdelivr.net
cdn.jsdelivr.net — Cisco Umbrella Rank: 454
163 KB
1 awsstatic.com
a0.awsstatic.com — Cisco Umbrella Rank: 76154
2 KB
1 cs50.net
cdn.cs50.net
4 KB
6 3
Domain Requested by
4 cdn.jsdelivr.net cdn.cs50.net
1 a0.awsstatic.com
1 cdn.cs50.net
6 3

This site contains no links.

Subject Issuer Validity Valid
cs50.net
Amazon RSA 2048 M03		 2023-11-24 -
2024-12-22		 a year crt.sh
sni.cloudflaressl.com
Cloudflare Inc ECC CA-3		 2023-05-02 -
2024-05-01		 a year crt.sh
a0.awsstatic.com
Amazon RSA 2048 M03		 2024-04-05 -
2025-05-04		 a year crt.sh

This page contains 1 frames:

Primary Page: https://cdn.cs50.net/
Frame ID: 8190224081F0F56346BFC3F6785692F3
Requests: 6 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

CS50 CDN

Page URL History Show full URLs

  1. http://cdn.cs50.net/ HTTP 307
    https://cdn.cs50.net/ Page URL

Detected technologies

Overall confidence: 100%
Detected patterns
  • <link[^>]* href=[^>]*?bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.css
  • bootstrap(?:[^>]*?([0-9a-fA-F]{7,40}|[\d]+(?:.[\d]+(?:.[\d]+)?)?)|)[^>]*?(?:\.min)?\.js
Overall confidence: 100%
Detected patterns
  • jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?
Overall confidence: 100%
Detected patterns
  • <link [^>]*?href="?[a-zA-Z]*?:?//cdn\.jsdelivr\.net/
  • //cdn\.jsdelivr\.net/

Page Statistics

6
Requests

100 %
HTTPS

33 %
IPv6

3
Domains

3
Subdomains

3
IPs

2
Countries

168 kB
Transfer

772 kB
Size

0
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://cdn.cs50.net/ HTTP 307
    https://cdn.cs50.net/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

6 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
cdn.cs50.net/
Redirect Chain
  • http://cdn.cs50.net/
  • https://cdn.cs50.net/
19 KB
4 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://cdn.cs50.net/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.138.36.50 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-108-138-36-50.muc50.r.cloudfront.net
Software
nginx/1.24.0 /
Resource Hash
ec2152a0457e319a268b92fcfbd2d386236a9a7b997e7cbf543d1496f4064b84
Security Headers
Name Value
Content-Security-Policy frame-ancestors 'self'
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

alt-svc
h3=":443"; ma=86400
cache-control
no-cache, no-store, must-revalidate
content-encoding
gzip
content-security-policy
frame-ancestors 'self'
content-type
text/html; charset=utf-8
date
Thu, 11 Apr 2024 02:50:21 GMT
expires
0
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
pragma
no-cache
referrer-policy
strict-origin
server
nginx/1.24.0
status
200 OK
strict-transport-security
max-age=31536000; includeSubDomains
via
1.1 05e8912dc00dd796ed2b040e3237568e.cloudfront.net (CloudFront)
x-amz-cf-id
qluFYbMOPUMeDcGhGOVh3ap6Axphf8Hr_7GOPafh3EpSyknZCDX2sg==
x-amz-cf-pop
MUC50-P2
x-cache
Miss from cloudfront
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
0

Redirect headers

Location
https://cdn.cs50.net/
Non-Authoritative-Reason
HttpsUpgrades
bootstrap.min.css
cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/ 		227 KB
33 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css
Requested by
Host: cdn.cs50.net
URL: https://cdn.cs50.net/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.16.85.20 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
3017df4a76db5f01c2b99b603d88b03106df13bcfe18e67b7c13c2341d3a67df
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://cdn.cs50.net/
Origin
https://cdn.cs50.net
accept-language
de-DE,de;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 02:50:21 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
age
2446550
x-jsd-version
5.3.2
content-encoding
br
x-cache
HIT, HIT
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-etou8220083-FRA, cache-lga21981-LGA
x-jsd-version-type
version
server
cloudflare
etag
W/"38df4-HxOZgbm0enZu+gphu3ito1HxbEs"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=cpD17%2Fn%2BFg%2FsvTJy5uKvKnxCOK4O044VQhdmBWCyfnGFIwfmDIOXKv3rW0nY0Mkbm3jSwzpaX2BG5Rm2e4G49M%2BwKe%2B9v3uR9RBVnUf4msPEh8CIaMoX7VqwubQcwMMfy7w%3D"}],"group":"cf-nel","max_age":604800}
content-type
text/css; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
cf-ray
8727ab2cc9344528-TXL
bootstrap.bundle.min.js
cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/ 		79 KB
25 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js
Requested by
Host: cdn.cs50.net
URL: https://cdn.cs50.net/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.16.85.20 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
82f64f62bb03c1bc1824b0f9c9e05f70dba33e146818e63cdf5c306c8cf3dedd
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://cdn.cs50.net/
Origin
https://cdn.cs50.net
accept-language
de-DE,de;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 02:50:21 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
age
541027
x-jsd-version
5.3.2
content-encoding
br
x-cache
HIT, HIT
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-etou8220085-FRA, cache-lga21975-LGA
x-jsd-version-type
version
server
cloudflare
etag
W/"13b17-9/0PPchLLPk7+B6DJQWmc/NU4KM"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=U7RT4FuHQ%2BvW3PSGqDVGoCnZmNawE9jUZeXt44pQdjV%2FdGcjWRfEg%2FYtS2%2F3KgGFhnuSFfR236bPagKgUhoZrkiIZIdWqtxlWww2p2FIh5WFAAdXjL9Y9AAUgeXrip5BrN0%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
cf-ray
8727ab2cc9354528-TXL
jquery.min.js
cdn.jsdelivr.net/npm/jquery@3.7.1/dist/ 		85 KB
31 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.min.js
Requested by
Host: cdn.cs50.net
URL: https://cdn.cs50.net/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.16.85.20 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
fc9a93dd241f6b045cbff0481cf4e1901becd0e12fb45166a8f17f95823f0b1a
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://cdn.cs50.net/
Origin
https://cdn.cs50.net
accept-language
de-DE,de;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 02:50:21 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
age
12186301
x-jsd-version
3.7.1
content-encoding
br
x-cache
HIT, HIT
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-eddf8230077-FRA, cache-vie6323-VIE
x-jsd-version-type
version
server
cloudflare
etag
W/"155ed-7khZLR//lS/PBs4LZm7UeFSTr9w"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=CWxKunPGSgc5iMCa8%2F4CR5ysXTu7tEVNHuQ3Oqy2PYwkE6e5IN8OagwRR4Tq43LJ5%2BpCenU1roRoK674v8rdBbqch7G5N1IBMdyQG46W6hGgWJQmFY47cT44Ckg%2FQbSEpgo%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
cf-ray
8727ab2cc9374528-TXL
moment-with-locales.min.js
cdn.jsdelivr.net/npm/moment@2.29.4/min/ 		360 KB
74 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cdn.jsdelivr.net/npm/moment@2.29.4/min/moment-with-locales.min.js
Requested by
Host: cdn.cs50.net
URL: https://cdn.cs50.net/
Protocol
H3
Security
QUIC, , AES_128_GCM
Server
104.16.85.20 -, , ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software
cloudflare /
Resource Hash
430725b95468277dcbccc27e08e3d873276c0082737310b0b1ad330392511847
Security Headers
Name Value
Strict-Transport-Security max-age=31536000; includeSubDomains; preload
X-Content-Type-Options nosniff

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://cdn.cs50.net/
Origin
https://cdn.cs50.net
accept-language
de-DE,de;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Thu, 11 Apr 2024 02:50:21 GMT
strict-transport-security
max-age=31536000; includeSubDomains; preload
x-content-type-options
nosniff
cf-cache-status
HIT
nel
{"success_fraction":0.01,"report_to":"cf-nel","max_age":604800}
age
2322974
x-jsd-version
2.29.4
content-encoding
br
x-cache
HIT, MISS
cross-origin-resource-policy
cross-origin
alt-svc
h3=":443"; ma=86400
x-served-by
cache-fra-eddf8230117-FRA, cache-lga21969-LGA
x-jsd-version-type
version
server
cloudflare
etag
W/"5a17b-QFmuyh0Lma7IAGs3qSfwnZwOeU0"
vary
Accept-Encoding
report-to
{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=L1BhWtm0Vn9ryjs9JaDbhxi5zWwkhPK4RFJmI1XS5wd2O4%2FZC4mQYjy1qgAJu%2BA9Iv4eZnR6xuH8fBFr%2FnpdVsRcOod4RBcl%2FlRGngTaA2ynIWFZQzdOi%2BH3M%2Fzi3YbSQ2A%3D"}],"group":"cf-nel","max_age":604800}
content-type
application/javascript; charset=utf-8
access-control-allow-origin
*
access-control-expose-headers
*
cache-control
public, max-age=31536000, s-maxage=31536000, immutable
timing-allow-origin
*
cf-ray
8727ab2cc9324528-TXL
favicon.ico
a0.awsstatic.com/main/images/site/fav/ 		1 KB
2 KB 		Other
General
Check archive.org
Download Go to
Full URL
https://a0.awsstatic.com/main/images/site/fav/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
2600:9000:26da:2c00:1e:71da:e88:f841 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
Software
AmazonS3 /
Resource Hash
4f56a75f3860c7136ab3a07347e57a7ef06dd84d324d19af0dac6b5f3268e023

Request headers

sec-ch-ua
"Google Chrome";v="123", "Not:A-Brand";v="8", "Chromium";v="123"
Referer
https://cdn.cs50.net/
accept-language
de-DE,de;q=0.9
sec-ch-ua-mobile
?0
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
sec-ch-ua-platform
"Win32"

Response headers

date
Tue, 30 Jan 2024 01:58:11 GMT
x-amz-version-id
UUNSy32vC7.f2Xcw_avK9TXNuj85lxMz
via
1.1 3c2c38b11de7f29e091125f84ca68d28.cloudfront.net (CloudFront)
x-amz-cf-pop
MUC50-P4
age
6223931
x-amz-server-side-encryption
AES256
x-cache
Hit from cloudfront
x-amz-replication-status
COMPLETED
alt-svc
h3=":443"; ma=86400
content-length
1150
last-modified
Wed, 10 Jan 2024 18:20:32 GMT
server
AmazonS3
etag
"6639df213d37693c848e7b4e8c0bca63"
content-type
image/x-icon
cache-control
max-age=31536000
accept-ranges
bytes
x-amz-cf-id
ZDz30WJemkpsURaHsHPhhAX7YpvyeJi-GMpLO-0Z05MRVqbs1iNIdw==

Verdicts & Comments Add Verdict or Comment

5 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.

number| uidEvent object| bootstrap function| $ function| jQuery function| moment

0 Cookies

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
Content-Security-Policy frame-ancestors 'self'
Strict-Transport-Security max-age=31536000; includeSubDomains
X-Content-Type-Options nosniff
X-Frame-Options SAMEORIGIN
X-Xss-Protection 0