tsek.dk is a .dk domain the registry has taken out of service: it is delegated to the registry's own sentinel nameservers (nonexistent.punktum.dk), so it does not resolve. It was registered on 13 August 2026 (WHOIS) and first appeared in the .dk zone on 14 August 2026. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| nonexistent.punktum.dk | — | — | — |
| www | 212.237.249.17 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown (the delegated nameservers don't answer) |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-08-13 |
| Expires | 2027-08-12 (294d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 22:34:47 | 539ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 19:07:37 | 481ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 20:27:17 | 1784ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-17 19:05:25 | 755ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-16 05:40:35 | 752ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-14 08:39:56 shown | 3514ms | 1 NS 0 A 0 MX | ❓ Unknown |