c5-opgradering.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 21 October 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Below are all of its DNS records from our latest 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 | 93.191.156.98 (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 | 2021-10-21 |
| Expires | 2026-10-20 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 06:11:12 shown | 1357ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-02 09:05:39 | 1171ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-24 15:05:37 | 669ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-20 07:27:22 | 882ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-19 15:03:12 | 477ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-19 03:09:13 | 658ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 18:41:12 | 435ms | 4 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 18:41:08 | 531ms | 4 NS 1 A 0 MX | 🔒 Secure |