github.com

Last analyzed: Refreshing...

Looks Normal

Standard signals observed

This reflects observed technical signals, not a judgment of the website's intent or safety. Wondering if GitHub is legit? Below you'll find technical signals for github.com including domain age, HTTPS security, DNS records, and redirect behavior to help you decide if this website is trustworthy.

Observed signals
Domain registered 18 years ago
Valid HTTPS certificate
DNS hosted via AWS Route 53 (based on nameservers)
1 redirect observed
Favicon detected
HSTS preloaded (browser-enforced)
AI Summary Plain-language explanation of the signals

The domain github.com is an active website with DNS records and is hosted using nameservers linked to AWS Route 53 (inferred from nameservers). It has been registered for 18 years with MarkMonitor Inc. as the registrar, and its current registration is valid until October 9, 2026. The site enforces HTTPS, using a valid multi-domain certificate issued by Sectigo Limited, expiring in February 2026. The domain redirects HTTP traffic to HTTPS, and the site technology includes the Rails framework. These signals describe technical characteristics only and do not indicate intent or safety.

HTTP Response
HTTPS 1 redirect

Final URL:

https://github.com/
Redirect chain
301 http://github.com/ → https://github.com/
200 https://github.com/
TLS Certificate
Valid
Yes
Covers Domain
Yes
Type
Multi-domain

Expires in 66 days

Certificate details

Subject: /CN=github.com

Issuer: /C=GB/O=Sectigo Limited/CN=Sectigo Public Server Authentication CA DV E36

Chain: 3 certificates

Subject Alt Names (2)
github.com matches
www.github.com
DNS Records
AWS Route 53 (inferred)

Based on nameserver patterns, DNS appears to be hosted via AWS Route 53, Amazon's enterprise-grade DNS service.

A Records
1
AAAA
0
NS
8
IP addresses & nameservers

A: 140.82.112.3

NS: dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net, ns-1283.awsdns-32.org, ns-1707.awsdns-21.co.uk, ns-421.awsdns-52.com, ns-520.awsdns-01.net

MX records (5)
aspmx.l.google.com
alt1.aspmx.l.google.com
alt2.aspmx.l.google.com
alt3.aspmx.l.google.com
alt4.aspmx.l.google.com
TXT records (19)
MS=6BF03E6AF5CB689E315FB6199603BABF2C88D805
MS=ms44452932
MS=ms58704441
TAILSCALE-xOzoDvFUzZr5YYVCQFuD
adobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d...

+ 14 more

Domain Registration
18 years old
Registered Oct 09, 2007
Registrar MarkMonitor Inc.
Expires Oct 09, 2026
More details

Last changed: Sep 07, 2024

Status: client delete prohibited client transfer prohibited client update prohibited

Nameservers: DNS1.P08.NSONE.NET, DNS2.P08.NSONE.NET, ...

Robots.txt (Crawl directives)
Status
200 OK
Crawl Access
Allowed (with restrictions)

These directives apply to crawlers requesting this host.

Agents
5
Rules
84
Sitemaps
0
Directive breakdown
Disallow 82
Allow 1
Crawl-delay 1.0s
Raw content
Showing first ~1.97 KB View full file 
# If you would like to crawl GitHub contact us via https://support.github.com?tags=dotcom-robots
# We also provide an extensive API: https://docs.github.com
User-agent: bingbot
Disallow: /ekansa/Open-Context-Data
Disallow: /ekansa/opencontext-*
Disallow: /account-login
Disallow: */tarball/
Disallow: */zipball/
Disallow: /Explodingstuff/
Disallow: /copilot/
Disallow: /copilot/c/

User-agent: adidxbot
Disallow: /ekansa/Open-Context-Data
Disallow: /ekansa/opencontext-*
Disallow: /account-login
Disallow: */tarball/
Disallow: */zipball/
Disallow: /Explodingstuff/
Disallow: /copilot/
Disallow: /copilot/c/

User-agent: BingPreview
Disallow: /ekansa/Open-Context-Data
Disallow: /ekansa/opencontext-*
Disallow: /account-login
Disallow: */tarball/
Disallow: */zipball/
Disallow: /Explodingstuff/
Disallow: /copilot/
Disallow: /copilot/c/

User-agent: baidu
crawl-delay: 1


User-agent: *

Disallow: /*/*/pulse
Disallow: /*/*/projects
Disallow: /*/*/forks
Disallow: /*/*/issues/new
Disallow: /*/*/milestones/new
Disallow: /*/*/issues/search
Disallow: /*/*/commits/
Disallow: /*/*/branches
Disallow: /*/*/contributors
Disallow: /*/*/tags
Disallow: /*/*/stargazers
Disallow: /*/*/watchers
Disallow: /*/*/network
Disallow: /*/*/graphs
Disallow: /*/*/compare

Disallow: /*/tree/
Disallow: /gist/
Disallow: /*/download
Disallow: /*/revisions
Disallow: /*/commits/*?author
Disallow: /*/commits/*?path
Disallow: /*/comments
Disallow: /*/archive/
Disallow: /*/blame/
Disallow: /*/raw/
Disallow: /*/cache/
Disallow: /.git/
Disallow: */.git/
Disallow: /*.git$
Disallow: /search/advanced
Disallow: /search$
Disallow: /*q=
Disallow: /*.atom$

Disallow: /ekansa/Open-Context-Data
Disallow: /ekansa/opencontext-*
Disallow: */tarball/
Disallow: */zipball/

Disallow: /*source=*
Disallow: /*ref_cta=*
Disallow: /*plan=*
Disallow: /*return_to=*
Disallow: /*ref_loc=*
Disallow: /*setup_organization=*
Disallow: /*source_repo=*
Disallow: /*ref_page=*
Disallow: /*source=*
Disallow: /*referrer=*
Disallow: /*report=*
Disall
... (truncated)

Robots.txt directives are advisory instructions for crawlers and do not enforce access control.

Tech Stack
Platform
Rails (low)
JS Framework
Not detected
Server
Not exposed
CDN
Not detected
Analytics
Not detected
Security Headers
5 / 6
HSTS CSP X-Frame-Options X-Content-Type-Options Referrer-Policy
Detection evidence
CSP:
content-security-policy header present
HSTS:
strict-transport-security header present
Rails:
Ruby on Rails markers detected
Referrer-Policy:
referrer-policy header present
X-Frame-Options:
x-frame-options header present
X-Content-Type-Options:
x-content-type-options header present

Technologies detected from HTTP headers and HTML patterns. Detection is passive and may not capture all technologies.

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