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. Its website address 75.119.145.21 is hosted by Contabo GmbH (AS51167) in France. 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 |
|---|---|---|---|---|---|---|---|
| 75.119.145.21 | 120s | mail.gnb-mail.dk | AS51167 | Contabo GmbH | 75.119.128.0/19 | 🇫🇷 France | Lauterbourg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 120s | mail.gnb-mail.dk | 2a02:c206:2099:6999::1 75.119.145.21 |
mail.gnb-mail.dk mail.gnb-mail.dk |
AS51167 Contabo GmbH AS51167 Contabo GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.gnb-mail.dk → 75.119.145.21 |
| 🔶 Autoconfig | mail.gnb-mail.dk → 75.119.145.21 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:c206:2099:6999::1 | 120s | mail.gnb-mail.dk | AS51167 | Contabo GmbH | 2a02:c204:0:0:0:0:0:0/30 | 🇫🇷 France | Lauterbourg |
| 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2410094888 |
| 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 | 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 shown | 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 |