Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
koeln.ccc.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-21 20:24:48 UTC · ↺ Refresh
MX Hostnames
- mail.koeln.ccc.de
MX Priorities
- mail.koeln.ccc.de: 10
A / AAAA Records
- 212.201.68.138 ↩ w11g.koeln.ccc.de
- 2a00:5ba0:8000:64:226:b9ff:fe7f:6b82 ↩ weltregierung.koeln.ccc.de
Mail Server IPs
- 93.94.130.142 ↩ mail.koeln.ccc.de
- 2a02:158:380:280::23:42 ↩ mail.koeln.ccc.de
SOA Record
Raw SOA
ns0.koeln.ccc.de admin.koeln.ccc.de 2026030616 3600 7200 1209600 300
Primary NS (mname)
ns0.koeln.ccc.de
Admin Email (rname)
admin@koeln.ccc.de
Serial
2026030616
Refresh
3600s
Retry
7200s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns3.koeln.ccc.de
ns0.koeln.ccc.de
ns5.koeln.ccc.de
ns1.koeln.ccc.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx ~all
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