gnb-mail.dk is a .dk domain served by 2 nameservers (coco.ns.cloudflare.com, sid.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.gnb-mail.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 159.195.249.93 | 300s | mail.gnb-mail.dk | AS197540 | — | — | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.gnb-mail.dk | 159.195.249.93 2a0a:4cc0:60:2a79:a41c:10ff:febc:cb86 |
mail.gnb-mail.dk mail.gnb-mail.dk |
AS197540 netcup GmbH AS197540 netcup GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.gnb-mail.dk → 159.195.249.93 |
| 🔶 Autoconfig | mail.gnb-mail.dk → 159.195.249.93 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a0a:4cc0:60:2a79:a41c:10ff:febc:cb86 | 300s | mail.gnb-mail.dk | AS197540 | netcup GmbH | 2a0a:4cc0:40:0:0:0:0:0/42 | 🇩🇪 Germany | Nuremberg |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 1 | 443 | mail.gnb-mail.dk |
| _imap._tcp | 0 | 1 | 143 | mail.gnb-mail.dk |
| _imaps._tcp | 0 | 1 | 993 | mail.gnb-mail.dk |
| TXT Record |
|---|
| google-site-verification=FXqGh97aPt9ivvUJ6wWh7QZtHPG7uze63OL3f4GX6v0 |
| google-site-verification=J4zS7wI1xehD6I1iWOY2Fyj8NsXrjHhAPn3iLZXGhdM |
| v=spf1 mx -all |
| Policy | Record (gnb-mail.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.gnb-mail.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:2dcbfac9b8d44ff8a531762370f53372@dmarc-reports.cloudflare.net |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 20251003132255 |
| Policy MX | — |
| www | Exists, no address |
| www vs bare domain | www does not resolve gnb-mail.dk: 159.195.249.93 2a0a:4cc0:60:2a79:a41c:10ff:febc:cb86 (AS197540) (all like this)www.gnb-mail.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.gnb-mail.dk | DANE-EE · SPKI · SHA-256 | B8969D79FA155EC239BC9618B5DBAB35… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2414081370 |
| Primary NS (MNAME) | coco.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 06:35:01 | 1063ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 17:36:16 | 661ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 23:29:04 | 893ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-21 02:52:26 | 1213ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-06 16:01:32 shown | 2956ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 12:34:28 | 2010ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 11:14:38 | 1008ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-22 03:48:18 | 1166ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-11 08:13:19 | 949ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 13:04:25 | 1139ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 09:23:51 | 758ms | 2 NS 1 A 1 MX | 🔒 Secure |