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Join the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.

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Updated: 2026-09-01 08:36 Language: English (default) Access: Normal

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Website Overview

Limited stack disclosure and few obvious backend markers suggest a more restrained public footprint. That reduces easy fingerprinting clues but is not proof of overall security. An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality.

Domain and Registration

Registered in 2007, this domain has about 18 years of history. That suggests continuity, although ownership and purpose may have changed. The registrar, MarkMonitor Inc., specializes in corporate domain and brand management, suggesting attention to domain asset protection. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.

DNS and Email

The lowest TTL is 22 seconds, supporting rapid record changes at the cost of more frequent lookups. Nameservers are provided by Amazon Route 53, indicating managed DNS hosting. MX records point to the Microsoft 365 email service. CAA records restrict which certificate authorities are authorized to issue certificates. No CNAME was found; the observed records resolve directly to addresses.

TLS and Certificates

The certificate issuer is Sectigo Limited, a commercial certificate authority. The public key uses EC with 256 bits. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate's total validity is about 89 days, consistent with a short renewal cycle.

HTTP and Browser Security

The response lacks these common security headers: Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. No obvious internal addresses or debug information were found in the headers. The Server header contains the custom value github.com. Cookie security attributes are unknown.

Technology Stack Analysis

No obvious technology stack is exposed. This may reflect restrained information disclosure, although the underlying technologies remain unknown.

Search and Social Sharing

The meta description has 186 characters and may be shortened in search results. Twitter Card metadata is configured. The page declares 8 language or regional alternatives using hreflang. The title has 61 characters, within a common display range. The observed directives allow indexing and link following.

Hosting and Email

DNSAmazon Route 53
HostingMicrosoft Corporation
EmailMicrosoft 365
Location United States flagPhoenix, Arizona, United States 172.182.252.133

Pages, Search and Sharing

Meta descriptionJoin the world's most widely adopted, AI-powered developer platform where millions of developers, businesses, and the largest open source community build software that advances humanity.
Canonical URLhttps://github.com
LanguageEnglish (default) · Multilingual
Twitter Cardsummary_large_image

Social Sharing Preview

12 fields

robots.txt (opens in a new tab)

82 rules
bingbot 0 allowed · 8 disallowed
  • Disallow/ekansa/Open-Context-Data
  • Disallow/ekansa/opencontext-*
  • Disallow/account-login
  • Disallow*/tarball/
  • Disallow*/zipball/
  • Disallow/Explodingstuff/
  • Disallow/copilot/
  • Disallow/copilot/c/
adidxbot 0 allowed · 8 disallowed
  • Disallow/ekansa/Open-Context-Data
  • Disallow/ekansa/opencontext-*
  • Disallow/account-login
  • Disallow*/tarball/
  • Disallow*/zipball/
  • Disallow/Explodingstuff/
  • Disallow/copilot/
  • Disallow/copilot/c/
bingpreview 0 allowed · 8 disallowed
  • Disallow/ekansa/Open-Context-Data
  • Disallow/ekansa/opencontext-*
  • Disallow/account-login
  • Disallow*/tarball/
  • Disallow*/zipball/
  • Disallow/Explodingstuff/
  • Disallow/copilot/
  • Disallow/copilot/c/
baidu 0 allowed · 0 disallowed
  • IntervalCrawl delay 1 seconds
All bots 1 allowed · 57 disallowed
  • Allow/*?tab=achievements&achievement=*
  • 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/*referrer=*
  • Disallow/*report=*
  • Disallow/*author=*
  • Disallow/*since=*
  • Disallow/*until=*
  • Disallow/*commits?author=*
  • Disallow/*report-abuse?report=*
  • Disallow/*tab=*
  • Disallow/account-login
  • Disallow/Explodingstuff/
  • Disallow/copilot/
  • Disallow/copilot/c/

Sitemaps

0

No sitemaps found

Registration details RDAP / WHOIS

RegistrarMarkMonitor Inc.
Registered2007-10-09
Expires2026-10-09
Domain statusclient delete prohibited、client transfer prohibited、client update prohibited
Nameserversdns1.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
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Agithub.com140.82.116.444—
MXgithub.comgithub-com.mail.protection.outlook.com850
NSgithub.comdns1.p08.nsone.net140—
NSgithub.comdns2.p08.nsone.net140—
NSgithub.comdns3.p08.nsone.net140—
NSgithub.comdns4.p08.nsone.net140—
NSgithub.comns-1283.awsdns-32.org140—
NSgithub.comns-1707.awsdns-21.co.uk140—
NSgithub.comns-421.awsdns-52.com140—
NSgithub.comns-520.awsdns-01.net140—
TXTgithub.com00Dd0000000hHE0=1TBKg000000TN2r22—
TXTgithub.comMS=6BF03E6AF5CB689E315FB6199603BABF2C88D80522—
TXTgithub.comMS=ms4445293222—
TXTgithub.comMS=ms5870444122—
TXTgithub.comTAILSCALE-xOzoDvFUzZr5YYVCQFuD22—
TXTgithub.comadobe-idp-site-verification=b92c9e999aef825edc36e0a3d847d2dbad5b2fc0e05c79ddd7a16139b48ecf4b22—
TXTgithub.comanthropic-domain-verification-4az7qn=if8YWuRRqwLycGJDooumzHtxm22—
TXTgithub.comapple-domain-verification=RyQhdzTl6Z6x8ZP422—
TXTgithub.comatlassian-domain-verification=jjgw98AKv2aeoYFxiL/VFaoyPkn3undEssTRuMg6C/3Fp/iqhkV4HVV7WjYlVeF822—
TXTgithub.comcalendly-site-verification=at0DQARi7IZvJtXQAWhMqpmIzpvoBNF7aam5VKKxP22—
TXTgithub.comdocusign=087098e3-3d46-47b7-9b4e-8a23028154cd22—
TXTgithub.comfacebook-domain-verification=39xu4jzl7roi7x0n93ldkxjiaarx5022—
TXTgithub.comgoogle-site-verification=82Le34Flgtd15ojYhHlGF_6g72muSjamlMVThBOJpks22—
TXTgithub.comgoogle-site-verification=UTM-3akMgubp6tQtgEuAkYNYLyYAvpTnnSrDMWoDR3o22—
TXTgithub.comjamf-site-verification=XtaPNIYghF_e_xRDI8CjgQ22—
TXTgithub.comkrisp-domain-verification=ZlyiK7XLhnaoUQb2hpak1PLY7dFkl1WE22—
TXTgithub.comloom-site-verification=f3787154f1154b7880e720a511ea664d22—
TXTgithub.commiro-verification=d2e174fdb00c71e0bcf58f8e58c3da2dd80dcfa922—
TXTgithub.comopenai-domain-verification=dv-3nh33eQwdkotMIAzLrIDVZo122—
TXTgithub.comserval-domain-verification-ydryhj=qbkiEakpwEpTvHh5fIiCqtaue22—
TXTgithub.comshopify-verification-code=t1YPwcmvnxZyBycaCpk1MPyWoFs72o22—
TXTgithub.comstripe-verification=f88ef17321660a01bab1660454192e014defa29ba7b8de9633c69d6b4912217f22—
TXTgithub.comv=spf1 ip4:192.30.252.0/22 include:spf.protection.outlook.com include:_netblocks.google.com include:_netblocks2.google.com include:mail.zendesk.com include:_spf.salesforce.com include:servers.mcsv.net include:mktomail.com include:sendgrid.net ip4:62.253.227.114 ip4:166.78.69.169 ip4:166.78.69.170 ip4:166.78.71.131 ~all22—
CAAgithub.com0 issue "digicert.com"3600—
CAAgithub.com0 issue "globalsign.com"3600—
CAAgithub.com0 issue "letsencrypt.org"3600—
CAAgithub.com0 issue "sectigo.com"3600—
CAAgithub.com0 issuewild "digicert.com"3600—
CAAgithub.com0 issuewild "letsencrypt.org"3600—
CAAgithub.com0 issuewild "sectigo.com"3600—
DMARC_dmarc.github.comv=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1103—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectgithub.com
IssuerSectigo Limited
Valid until2026-09-30T23:59 · Remaining when checked: 31 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
content-languageen-US
cache-controlmax-age=0, private, must-revalidate
servergithub.com
strict-transport-securitymax-age=31536000; includeSubdomains; preload
content-security-policydefault-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com github.githubassets.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net productionresultssa1.blob.core.windows.net productionresultssa2.blob.core.windows.net productionresultssa3.blob.core.windows.net productionresultssa4.blob.core.windows.net productionresultssa5.blob.core.windows.net productionresultssa6.blob.core.windows.net productionresultssa7.blob.core.windows.net productionresultssa8.blob.core.windows.net productionresultssa9.blob.core.windows.net productionresultssa10.blob.core.windows.net productionresultssa11.blob.core.windows.net productionresultssa12.blob.core.windows.net productionresultssa13.blob.core.windows.net productionresultssa14.blob.core.windows.net productionresultssa15.blob.core.windows.net productionresultssa16.blob.core.windows.net productionresultssa17.blob.core.windows.net productionresultssa18.blob.core.windows.net productionresultssa19.blob.core.windows.net github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com wss://alive-staging.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com wss://production-copilot-host.webpubsub.azure.com edge.fullstory.com rs.fullstory.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com www.youtube-nocookie.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com user-images.githubusercontent.com private-user-images.githubusercontent.com opengraph.githubassets.com repository-images.githubusercontent.com marketplace-screenshots.githubusercontent.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com explore-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com images.ctfassets.net/8aevphvgewt8/; manifest-src 'self'; media-src github.com user-images.githubusercontent.com secured-user-images.githubusercontent.com private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com github.githubassets.com assets.ctfassets.net/8aevphvgewt8/ videos.ctfassets.net/8aevphvgewt8/; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
x-frame-optionsdeny
x-content-type-optionsnosniff
referrer-policyorigin-when-cross-origin, strict-origin-when-cross-origin
set-cookieRedacted

Identified technologies

Technology stack: Unknown

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