nu.dk is a .dk domain served by 2 nameservers (kehlani.ns.cloudflare.com, kolton.ns.cloudflare.com). It was registered on 19 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx1.spamfilter.cc. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.73.187 |
| 🔶 Autoconfig | 172.67.165.108 |
| www | 104.21.73.187 172.67.165.108 2606:4700:3030::6815:49bb 2606:4700:3033::ac43:a56c (AS13335) (address records, no CNAME) |
| www vs bare domain | Only www resolves nu.dk: no address (all like this)www.nu.dk: 104.21.73.187 172.67.165.108 2606:4700:3030::6815:49bb 2606:4700:3033::ac43:a56c (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2415214985 |
| Primary NS (MNAME) | kehlani.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2012-12-19 |
| Expires | 2026-12-31 (72d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 11:30:20 | 881ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-08 01:31:53 | 1476ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-01 04:59:57 | 762ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-26 03:59:25 | 1091ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-25 03:30:13 | 1687ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-21 17:36:12 shown | 1181ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-17 21:05:14 | 1909ms | 4 NS 4 A 0 MX | 🔓 Insecure |
| 2026-09-07 06:39:52 | 1147ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-27 00:33:22 | 17568ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-21 09:42:10 | 1318ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-26 11:53:47 | 3530ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 03:24:05 | 536ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-18 11:08:38 | 1425ms | 2 NS 0 A 1 MX | 🔓 Insecure |