GI

Github.com Domain Trust Report

ACTIVE GitHub — world's largest software development platform
PRISM VERDICT

github.com shows moderate health — SSL Certificate and Email Auth need attention. Review the breakdown below.

Last scanned 23m ago · Aug 22, 2026
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OVERALL TRUST SCORE
72 GRADE C
SSL warn
DNS Healthy
EMAIL Partial
SSL GRADE
C
Expires in 39d
DNS HEALTH
100%
8 nameservers
EMAIL AUTH
1/3
SPF · DKIM · DMARC
HEADERS
—
Score: 0/100
DOMAIN EXPIRY
—
Monitoring...
Warning conditions detected — some monitoring checks are in warning state.

Registration & ownership

WHOIS
Registrar MarkMonitor Inc.
Registered Oct 9, 2007
Updated Sep 7, 2024
Expires Oct 9, 2026
Status client delete prohibit.client transfer prohibit.client update prohibit.
github.com is registered with MarkMonitor Inc., since Oct 9, 2007. Domain registration expires Oct 9, 2026. Status: client delete prohibited.
Full WHOIS report

DNS records

DNS
A 20.207.73.82
MX github-com.mail.protection.outlook.com (pri 0)
NS dns1.p08.nsone.netdns2.p08.nsone.netdns3.p08.nsone.netdns4.p08.nsone.netns-1283.awsdns-32.orgns-1707.awsdns-21.co.ukns-421.awsdns-52.comns-520.awsdns-01.net
TXT 00Dd0000000hHE0=1TBKg000000TN2rMS=6BF03E6AF5CB689E315FB6199603BABF2C88D805MS=ms44452932MS=ms58704441TAILSCALE-xOzoDvFUzZr5YYVCQFuD +18 more
github.com resolves to 20.207.73.82. Nameservers: dns1.p08.nsone.net, dns2.p08.nsone.net (+6). Mail handled by 1 MX record.
Full DNS lookup

Hosting & network

NETWORK
IP address 20.207.73.82
Nameservers dns1.p08.nsone.netdns2.p08.nsone.netdns3.p08.nsone.netdns4.p08.nsone.netns-1283.awsdns-32.orgns-1707.awsdns-21.co.ukns-421.awsdns-52.comns-520.awsdns-01.net
Protocol HTTPS HTTP/2
github.com is hosted at 20.207.73.82. No IPv6 addresses detected. DNS is managed through 8 nameservers (dns1.p08.nsone.net).
Full IP analysis

SSL / TLS

SECURITY
Valid · C Sectigo Limited · expires Oct 1, 2026
39 days remaining
TLS 1.3 TLS 1.2 TLS 1.1 TLS 1.0
Full SSL report

Technology detected

STACK
GitHub PagesFastly CDNHSTSTLS 1.3PJAX
Full tech scan

30-day availability

MONITORING
99.50% incidents detected
30d ago today

Email authentication

EMAIL
Full email auth report

Monitoring events

EVENTS
No monitoring events detected — all probes returning clean results.
Run a specific check on github.com:
DNS lookup WHOIS SSL check Security headers Email auth Screenshot
DOMAIN INTELLIGENCE

What we know about Github.com

Github.com has been registered for 18 years (since Oct 9, 2007), managed through MarkMonitor Inc., ranked #31 globally by Tranco, categorised as developer tools. Its current health score is 72/100 (grade C) — generally healthy but with some configuration gaps worth reviewing. As a developer platform, its security header configuration and email authentication directly affect downstream CI/CD pipelines and OAuth integrations that depend on it.

Security Posture Grade C

github.com's security posture: SSL certificate needs attention — only 39 days until expiry.

SSL warn
Headers F
SSL expiry 39d
Health score 72/100
Email Authentication Partial

SPF is configured, restricting which servers can send email as this domain. DMARC is absent or set to "none" — no enforcement against email spoofing.

SPF Configured
DMARC policy none
Spoofable Yes
Network Infrastructure

github.com resolves to 20.207.73.82, DNS is managed through dns1.p08.nsone.net and dns2.p08.nsone.net (+6 more), email routed through 1 MX record.

Primary IP 20.207.73.82
Nameservers 8
MX records 1
A records 1
DOMAIN LIFECYCLE
Registered Oct 9, 2007 18 years old
Last updated Sep 7, 2024
Expires Oct 9, 2026
Registrar MarkMonitor Inc.
SSL issued by Sectigo Limited
DomainScan monitors github.com continuously — DNS every hour, SSL & email auth every 6 h, security headers every 12 h, WHOIS every 24 h. Every detected change triggers a severity-classified monitoring event. Refreshed 23m ago
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