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 58m ago · Oct 6, 2026
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OVERALL TRUST SCORE
77 GRADE C
SSL warn
DNS Healthy
EMAIL Strong
SSL GRADE
C
Expires in 54d
DNS HEALTH
100%
8 nameservers
EMAIL AUTH
2/3
SPF · DKIM · DMARC
HEADERS
A+
Score: 90/100
DOMAIN EXPIRY
734d
Oct 9, 2028
Warning conditions detected — some monitoring checks are in warning state.

Registration & ownership

WHOIS
Registrar MarkMonitor Inc.
Registered Oct 9, 2007
Updated Sep 7, 2026
Expires Oct 9, 2028 734d
Status client delete prohibit.
github.com is registered with MarkMonitor Inc., since Oct 9, 2007. Domain registration expires Oct 9, 2028 (734 days). Status: client delete prohibited.
Full WHOIS report

DNS records

DNS
A 140.82.114.4
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 +19 more
CAA digicert.comglobalsign.comletsencrypt.orgsectigo.com
github.com resolves to 140.82.114.4. Nameservers: dns1.p08.nsone.net, dns2.p08.nsone.net (+6). Mail handled by 1 MX record.
Full DNS lookup

Hosting & network

NETWORK
IP address 140.82.114.4
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 140.82.114.4. 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 Nov 30, 2026
54 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
99.90% incidents detected
30d ago today

Email authentication

EMAIL
Full email auth report

Monitoring events

693 total EVENTS
SPF at 9/10 DNS lookups — headroom shrinking 1h ago
medium email SPF_LOOKUP_LIMIT_APPROACHING
SPF at 9/10 DNS lookups — headroom shrinking 1h ago
medium email SPF_LOOKUP_LIMIT_APPROACHING
DNS A record modified 2h ago
medium dns DNS_RECORD_MODIFIED
dns.a
+678 more — view live
Run a specific check on github.com:
DNS lookup WHOIS SSL check Security headers Email auth Screenshot
DOMAIN LIFECYCLE
Registered Oct 9, 2007 18 years old
Last updated Sep 7, 2026
Expires Oct 9, 2028 734 days remaining
Registrar MarkMonitor Inc.
SSL issued by Sectigo Limited
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 77/100 (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 54 days until expiry; security headers are well-configured; no blacklist entries found.

SSL warn
Headers A+
SSL expiry 54d
Health score 77/100
Email Authentication Strong

SPF is configured, restricting which servers can send email as this domain. DMARC policy is set to "quarantine" — suspicious emails are quarantined.

SPF Configured
DMARC policy quarantine
Spoofable No
Network Infrastructure

github.com resolves to 140.82.114.4, DNS is managed through dns1.p08.nsone.net and dns2.p08.nsone.net (+6 more), email routed through 1 MX record.

Primary IP 140.82.114.4
Nameservers 8
MX records 1
A records 1
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 58m ago
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