~/d/o2.de
// o2.de
Live audit across 8 checks. Cached 24h · generated less than a minute ago.
domain_grade
C
fair
74
/ 100 · across 8 checks
// points lost on:
dmarc −10
spf −5
security headers −5
whois −3
dnssec −3
SSL Certificate
[ OK ]
Valid for 64 more days.
Issued by WE1 · 64 days left · TLSv1.3
DMARC Policy
[ WARN ]
DMARC record exists but policy is 'none' — monitoring only, not enforcing. Switch to 'quarantine' or 'reject' to block spoofing.
v=DMARC1; p=none; rua=mailto:[email protected]
SPF Record
[ WARN ]
Soft fail (~all). Unauthorized senders flagged but not rejected. Consider -all for stronger protection.
4 lookups · all=~all
Name Servers
[ OK ]
3 authoritative nameservers
ns1.o2online.de · ns2.o2online.de · ns3.o2online.de
WHOIS
[ WARN ]
Registration data not reachable from our server (registrar may block RDAP/WHOIS for automated queries). Check manually at https://who.is/whois/o2.de
Registrar: — · expires —
Security Headers
[ WARN ]
Below average (40/100) — missing: X-Frame-Options, Referrer-Policy, Permissions-Policy · weak: content-security-policy
Score 40/100
[ embed_grade_badge ]
Domain grade: C — fair
markdown (github readme)
[](https://dombrains.com/d/o2.de)
html (any webpage)
<a href="https://dombrains.com/d/o2.de"><img src="https://dombrains.com/badge/o2.de/grade.svg" alt="DomBrains grade: C"></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/o2.de/ssl">
<img src="https://dombrains.com/badge/o2.de/dmarc">
<img src="https://dombrains.com/badge/o2.de/spf">
<img src="https://dombrains.com/badge/o2.de/mx">
<img src="https://dombrains.com/badge/o2.de/dnssec">
<img src="https://dombrains.com/badge/o2.de/security_headers">