usu.dk is a .dk domain served by 2 nameservers (ns1.desec.io, ns2.desec.org). It was registered on 23 September 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, 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.
| www | Exists, no address |
| www vs bare domain | Neither resolves usu.dk: no address www.usu.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 2 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025103752 |
| Primary NS (MNAME) | get.desec.io |
| Responsible (RNAME) | get@desec.io |
| Refresh | 86400s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2024-09-23 |
| Expires | 2027-09-22 (330d) |
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 |
|---|---|---|---|
| 2026-10-24 03:43:14 | 1292ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-15 23:39:23 | 839ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-09 08:28:22 | 3359ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-01 21:12:17 | 5994ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-24 19:43:40 | 961ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-22 07:54:30 | 2005ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-15 08:55:57 | 1369ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-04 06:29:31 | 1614ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-28 02:17:09 | 947ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-21 02:59:44 | 1479ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-14 18:00:44 | 3974ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-07 19:16:22 | 1284ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-06 01:56:46 | 1367ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-23 13:11:44 shown | 817ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-17 14:50:54 | 814ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-12 06:40:06 | 8581ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-03 19:59:32 | 1620ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-02 11:11:27 | 9447ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-27 10:29:00 | 406ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-24 21:23:41 | 490ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-17 12:59:32 | 4768ms | 2 NS 0 A 0 MX | 🔒 Secure |