~/d/github.com
// github.com
Live audit across 8 checks. Cached 24h · generated less than a minute ago.
domain_grade
B
good
77
/ 100 · across 8 checks
// points lost on:
dmarc −10
spf −5
security headers −5
dnssec −3
SSL Certificate
[ OK ]
Valid for 43 more days.
Issued by Sectigo Public Server Authentication CA DV E36 · 43 days left · TLSv1.3
DMARC Policy
[ WARN ]
Quarantine policy. Spoofed mail goes to spam. Consider moving to 'reject' for stronger protection.
v=DMARC1; p=quarantine; sp=reject; pct=100; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
SPF Record
[ WARN ]
Soft fail (~all). Unauthorized senders flagged but not rejected. Consider -all for stronger protection.
8 lookups · all=~all
MX Records
[ OK ]
MX configured. Detected provider: Microsoft 365.
0 github-com.mail.protection.outlook.com
Name Servers
[ OK ]
8 authoritative nameservers
dns1.p08.nsone.net · dns2.p08.nsone.net · dns3.p08.nsone.net
WHOIS
[ OK ]
Valid for 171 more days.
Registrar: MarkMonitor Inc. · expires 2026-10-09
Security Headers
[ WARN ]
Decent but improvable (68/100) — missing: Permissions-Policy · weak: content-security-policy
Score 68/100
[ embed_grade_badge ]
Domain grade: B — good
markdown (github readme)
[](https://dombrains.com/d/github.com)
html (any webpage)
<a href="https://dombrains.com/d/github.com"><img src="https://dombrains.com/badge/github.com/grade.svg" alt="DomBrains grade: B"></a>
// re-queries our scoring engine · cached 1h at the edge · backlinks to this profile page
[ per_check_badges ]
<img src="https://dombrains.com/badge/github.com/ssl">
<img src="https://dombrains.com/badge/github.com/dmarc">
<img src="https://dombrains.com/badge/github.com/spf">
<img src="https://dombrains.com/badge/github.com/mx">
<img src="https://dombrains.com/badge/github.com/dnssec">
<img src="https://dombrains.com/badge/github.com/security_headers">