sideb.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 8 October 2026 (WHOIS) and first appeared in the .dk zone on 17 June 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 | 185.20.205.22 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 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 | Simply.com A/S |
| Registered | 2026-10-08 |
| Expires | 2027-10-07 (353d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 08:42:50 | 3083ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 23:07:29 | 680ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-13 22:05:53 | 814ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-12 03:37:09 shown | 627ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-10 22:41:09 | 2458ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-09 16:51:22 | 8792ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-08 08:43:47 | 8680ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-06 18:32:09 | 706ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-02 00:36:47 | 722ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-29 13:30:33 | 741ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-27 17:56:06 | 5705ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-26 17:02:38 | 755ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-25 16:46:20 | 667ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-24 16:33:14 | 631ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-23 12:31:14 | 616ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-22 07:35:12 | 2682ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-20 09:40:27 | 818ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-19 08:43:53 | 8697ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-18 08:18:56 | 647ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-17 04:41:09 | 870ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-16 00:11:19 | 694ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-14 08:32:34 | 684ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-13 03:27:23 | 795ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-10 23:35:42 | 1260ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-09 18:13:35 | 741ms | 1 NS 0 A 0 MX | ❓ Unknown |