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cs50.dev Open in urlscan Pro
34.235.254.55  Public Scan

Go To Rescan Add Verdict Report
Submitted URL: http://code.cs50.io/
Effective URL: https://cs50.dev/
Submission: On January 17 via api from US — Scanned from DE
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 2 IPs in 1 countries across 3 domains to perform 8 HTTP transactions. The main IP is 34.235.254.55, located in Ashburn, United States and belongs to AMAZON-AES, US. The main domain is cs50.dev. The Cisco Umbrella rank of the primary domain is 798178.
TLS certificate: Issued by Amazon RSA 2048 M01 on April 26th 2023. Valid for: a year.
This is the only time cs50.dev was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
2 8 34.235.254.55 14618 (AMAZON-AES)
2 108.138.7.61 16509 (AMAZON-02)
8 2
Apex Domain
Subdomains		 Transfer
6 cs50.dev
cs50.dev — Cisco Umbrella Rank: 798178
1 MB
2 statuspage.io
g9mp5m2251ps.statuspage.io — Cisco Umbrella Rank: 657895
6 KB
2 cs50.io
code.cs50.io
2 KB
8 3
Domain Requested by
6 cs50.dev cs50.dev
2 g9mp5m2251ps.statuspage.io cs50.dev
g9mp5m2251ps.statuspage.io
2 code.cs50.io 2 redirects
8 3

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

Domain
github.com
cs50.readthedocs.io
docs.github.com
Subject Issuer Validity Valid
cs50.dev
Amazon RSA 2048 M01		 2023-04-26 -
2024-05-24		 a year crt.sh
*.statuspage.io
Amazon RSA 2048 M03		 2023-10-18 -
2024-11-16		 a year crt.sh

This page contains 2 frames:

Primary Page: https://cs50.dev/
Frame ID: F567143F4787097E0FC060E6D086C543
Requests: 7 HTTP requests in this frame

Frame: https://g9mp5m2251ps.statuspage.io/embed/frame
Frame ID: D9B05C68A33BB74443549D8AA11E7E24
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

Visual Studio Code for CS50

Page URL History Show full URLs

  1. http://code.cs50.io/ HTTP 301
    https://code.cs50.io/ HTTP 302
    https://cs50.dev/ Page URL

Page Statistics

8
Requests

100 %
HTTPS

0 %
IPv6

3
Domains

3
Subdomains

2
IPs

1
Countries

1131 kB
Transfer

3475 kB
Size

5
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://code.cs50.io/ HTTP 301
    https://code.cs50.io/ HTTP 302
    https://cs50.dev/ Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

8 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
Primary Request /
cs50.dev/
Redirect Chain
  • http://code.cs50.io/
  • https://code.cs50.io/
  • https://cs50.dev/
15 KB
5 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://cs50.dev/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
948a79ada7baa211618271ef17cbe22335dab8f04c1a747080526fa85b9d0c97
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/120.0.6099.224 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

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
Wed, 17 Jan 2024 10:39:46 GMT
expires
0
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
pragma
no-cache
referrer-policy
strict-origin
server
nginx
status
200 OK
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
0

Redirect headers

cache-control
no-cache, no-store, must-revalidate
content-length
145
content-security-policy
frame-ancestors 'self'
content-type
text/html
date
Wed, 17 Jan 2024 10:39:46 GMT
expires
0
location
https://cs50.dev/
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
pragma
no-cache
referrer-policy
strict-origin
server
nginx
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
x-frame-options
SAMEORIGIN
x-xss-protection
0
main.css
cs50.dev/static/dist/ 		321 KB
61 KB 		Stylesheet
General
Check archive.org
Download Go to
Full URL
https://cs50.dev/static/dist/main.css?1705471516
Requested by
Host: cs50.dev
URL: https://cs50.dev/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
c33be52ac056e9b908ce6e809392cafd8955efec5a27c05a1404264516a515b8
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

accept-language
de-DE,de;q=0.9
Referer
https://cs50.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:47 GMT
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
last-modified
Wed, 17 Jan 2024 06:04:54 GMT
server
nginx
content-encoding
gzip
referrer-policy
strict-origin
etag
W/"1705471494.0-329157-2730363634"
x-frame-options
SAMEORIGIN
content-type
text/css; charset=utf-8
status
200 OK
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
content-disposition
inline; filename=main.css
x-xss-protection
0
main.js
cs50.dev/static/dist/ 		3 MB
861 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://cs50.dev/static/dist/main.js?1705471516
Requested by
Host: cs50.dev
URL: https://cs50.dev/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
5c1966cac2528e1d451eb0d9f3610e20268010ca5b8c1773b0d4ff3d31e8fde1
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

accept-language
de-DE,de;q=0.9
Referer
https://cs50.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:47 GMT
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
content-encoding
gzip
status
200 OK
content-disposition
inline; filename=main.js
x-xss-protection
0
pragma
no-cache
referrer-policy
strict-origin
last-modified
Wed, 17 Jan 2024 06:04:54 GMT
server
nginx
etag
W/"1705471494.0-2999364-2547649158"
x-frame-options
SAMEORIGIN
content-type
text/javascript; charset=utf-8
cache-control
no-cache, no-store, must-revalidate
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
expires
0
ddb50.gif
cs50.dev/static/ 		76 KB
77 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cs50.dev/static/ddb50.gif
Requested by
Host: cs50.dev
URL: https://cs50.dev/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
959835bb120a8d2708d1f4ec849b2bbbfe4526612b9213658a2a3007cf40ed38
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

accept-language
de-DE,de;q=0.9
Referer
https://cs50.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:47 GMT
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
status
200 OK
content-disposition
inline; filename=ddb50.gif
content-length
77854
x-xss-protection
0
pragma
no-cache
referrer-policy
strict-origin
last-modified
Fri, 05 Jan 2024 19:19:05 GMT
server
nginx
etag
"1704482345.0-77854-1989282022"
x-frame-options
SAMEORIGIN
content-type
image/gif
cache-control
no-cache, no-store, must-revalidate
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
expires
0
dependencies-1.png
cs50.dev/static/ 		13 KB
14 KB 		Image
General
Check archive.org
Download Go to Show image
Full URL
https://cs50.dev/static/dependencies-1.png
Requested by
Host: cs50.dev
URL: https://cs50.dev/
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
c5822453f4de426213a21657db8f2c154069a11e7b03387059aa55c8ddf1c351
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

accept-language
de-DE,de;q=0.9
Referer
https://cs50.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:47 GMT
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
status
200 OK
content-disposition
inline; filename=dependencies-1.png
content-length
13114
x-xss-protection
0
pragma
no-cache
referrer-policy
strict-origin
last-modified
Fri, 05 Jan 2024 19:19:05 GMT
server
nginx
etag
"1704482345.0-13114-3755478187"
x-frame-options
SAMEORIGIN
content-type
image/png
cache-control
no-cache, no-store, must-revalidate
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
expires
0
script.js
g9mp5m2251ps.statuspage.io/embed/ 		2 KB
1 KB 		Script
General
Check archive.org
Download Go to
Full URL
https://g9mp5m2251ps.statuspage.io/embed/script.js
Requested by
Host: cs50.dev
URL: https://cs50.dev/
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.138.7.61 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-108-138-7-61.fra56.r.cloudfront.net
Software
AtlassianEdge /
Resource Hash
226f608620624d166d466825d2302985771bf4cd7ec8adc25d3c0202d477eef5
Security Headers
Name Value
Strict-Transport-Security max-age=259200
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

accept-language
de-DE,de;q=0.9
Referer
https://cs50.dev/
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:45 GMT
strict-transport-security
max-age=259200
x-content-type-options
nosniff
nel
{"failure_fraction": 0.001, "include_subdomains": true, "max_age": 600, "report_to": "endpoint-1"}
x-permitted-cross-domain-policies
none
atl-traceid
cae1dafa82a54a10866b1b8809067a8a
content-encoding
br
x-amz-cf-pop
FRA56-P6
x-statuspage-skip-logging
true
via
1.1 149b1af6ad8d2c0fedea82bfb1c29c66.cloudfront.net (CloudFront)
x-cache
Hit from cloudfront
age
2
x-statuspage-version
ea26c299f568f9f54285483e1b3b9bc2b550ea94
x-xss-protection
1; mode=block
x-runtime
0.050894
referrer-policy
strict-origin-when-cross-origin
server
AtlassianEdge
etag
W/"226f608620624d166d466825d2302985"
x-download-options
noopen
vary
Accept-Encoding
report-to
{"endpoints": [{"url": "https://dz8aopenkvv6s.cloudfront.net"}], "group": "endpoint-1", "include_subdomains": true, "max_age": 600}
content-type
text/javascript; charset=utf-8
access-control-allow-origin
*
cache-control
max-age=3, public
x-edge-cache-ttl
3
x-amz-cf-id
YephKVlDeGVGh9g_o7urHYOxSiRu5u7Iw1n4tR3wx4D638r-ADf2Fw==
x-pollinator-metadata-service
status-page-web-pages
frame
g9mp5m2251ps.statuspage.io/embed/ Frame D9B0 		12 KB
4 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://g9mp5m2251ps.statuspage.io/embed/frame
Requested by
Host: g9mp5m2251ps.statuspage.io
URL: https://g9mp5m2251ps.statuspage.io/embed/script.js
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
108.138.7.61 , United States, ASN16509 (AMAZON-02, US),
Reverse DNS
server-108-138-7-61.fra56.r.cloudfront.net
Software
AtlassianEdge /
Resource Hash
b51b4c79da055f6911ebebb83c5c972ada82c3351afd16ded70437fc88ddee66
Security Headers
Name Value
Strict-Transport-Security max-age=259200
X-Content-Type-Options nosniff
X-Xss-Protection 1; mode=block

Request headers

Referer
https://cs50.dev/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.224 Safari/537.36
accept-language
de-DE,de;q=0.9

Response headers

accept-ranges
bytes
access-control-allow-origin
*
age
2
atl-traceid
0c4c9a9c916b4db78bfc8c8770ae3177
cache-control
max-age=3, public
content-encoding
br
content-type
text/html; charset=utf-8
date
Wed, 17 Jan 2024 10:39:45 GMT
etag
W/"b51b4c79da055f6911ebebb83c5c972a"
nel
{"failure_fraction": 0.001, "include_subdomains": true, "max_age": 600, "report_to": "endpoint-1"}
referrer-policy
strict-origin-when-cross-origin
report-to
{"endpoints": [{"url": "https://dz8aopenkvv6s.cloudfront.net"}], "group": "endpoint-1", "include_subdomains": true, "max_age": 600}
server
AtlassianEdge
strict-transport-security
max-age=259200
vary
Accept-Encoding
via
1.1 149b1af6ad8d2c0fedea82bfb1c29c66.cloudfront.net (CloudFront)
x-amz-cf-id
8ssOlzZn--6CB1gftJA82wp4rGW875ikFCMLOxH9pEAfO80bcRdkFA==
x-amz-cf-pop
FRA56-P6
x-cache
Hit from cloudfront
x-content-type-options
nosniff
x-download-options
noopen
x-edge-cache-ttl
3
x-permitted-cross-domain-policies
none
x-pollinator-metadata-service
status-page-web-pages
x-runtime
0.151596
x-statuspage-skip-logging
true
x-statuspage-version
ea26c299f568f9f54285483e1b3b9bc2b550ea94
x-xss-protection
1; mode=block
fa-brands-400.545d1b74.woff2
cs50.dev/static/dist/ 		107 KB
108 KB 		Font
General
Check archive.org
Download Go to
Full URL
https://cs50.dev/static/dist/fa-brands-400.545d1b74.woff2
Requested by
Host: cs50.dev
URL: https://cs50.dev/static/dist/main.css?1705471516
Protocol
H2
Security
TLS 1.2, ECDHE_RSA, AES_128_GCM
Server
34.235.254.55 Ashburn, United States, ASN14618 (AMAZON-AES, US),
Reverse DNS
ec2-34-235-254-55.compute-1.amazonaws.com
Software
nginx /
Resource Hash
faae6fc0aa94cc5bde5076647c817a23206096a1cbeda10d1c6f3d89d6163ed1
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

Referer
https://cs50.dev/
Origin
https://cs50.dev
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/120.0.6099.224 Safari/537.36

Response headers

date
Wed, 17 Jan 2024 10:39:48 GMT
strict-transport-security
max-age=31536000; includeSubDomains
x-content-type-options
nosniff
content-security-policy
frame-ancestors 'self'
last-modified
Wed, 17 Jan 2024 06:04:52 GMT
server
nginx
referrer-policy
strict-origin
etag
"1705471492.0-109808-2939686981"
x-frame-options
SAMEORIGIN
content-type
font/woff2
status
200 OK
permissions-policy
camera=(self), geolocation=(self), microphone=(self)
content-disposition
inline; filename=fa-brands-400.545d1b74.woff2
content-length
109808
x-xss-protection
0

Verdicts & Comments Add Verdict or Comment

18 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| FontAwesomeConfig function| parcelRequire94c2 object| ___FONT_AWESOME___ object| FontAwesome number| uidEvent object| __core-js_shared__ object| core function| setImmediate function| clearImmediate object| regeneratorRuntime boolean| _babelPolyfill object| bootstrap function| bowser function| moment function| $ function| jQuery function| statusEmbedTest

5 Cookies

Domain/Path Name / Value
code.cs50.io/ Name: AWSALB
Value: SjvEeMyRWwLPjMM3HJXXUIEbKxs9X5+j4m5iEdlkXPcqkRqhHJjsZV2cC3Q9l9n0K+O7btY+D/0viaHYT3eA8d3W4OU18mVa5yjY8vas+CMYLVJI5OIYiSx9U8ii
code.cs50.io/ Name: AWSALBCORS
Value: SjvEeMyRWwLPjMM3HJXXUIEbKxs9X5+j4m5iEdlkXPcqkRqhHJjsZV2cC3Q9l9n0K+O7btY+D/0viaHYT3eA8d3W4OU18mVa5yjY8vas+CMYLVJI5OIYiSx9U8ii
cs50.dev/ Name: session
Value: 932e5b5a-2c39-4ac2-9868-1e446442b601
cs50.dev/ Name: AWSALB
Value: 232QtFopTeTnvJdU/KFk4pEN2HBlQEt6dbVeNGXpR91QMvhq7UyTXWPU4EyBFj//ooMwgxnQOwM9b7sC1o/teje1YghFvRxUTjFNZsKahtEGM6zLqhCAcrNv4Lyd
cs50.dev/ Name: AWSALBCORS
Value: 232QtFopTeTnvJdU/KFk4pEN2HBlQEt6dbVeNGXpR91QMvhq7UyTXWPU4EyBFj//ooMwgxnQOwM9b7sC1o/teje1YghFvRxUTjFNZsKahtEGM6zLqhCAcrNv4Lyd

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