cklassen.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 6 September 2025 (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 CNAME | cklassen.dk (all on cklassen.dk) |
| www vs bare domain | Same network cklassen.dk: 168.119.144.139 2a01:4f8:2b02:59b::2 (AS24940) www.cklassen.dk: 168.119.144.139 2a01:4f8:2b02:59b::2 (AS24940) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
| 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 | registry sentinel delegation (no resolvable NS); DNSSEC not evaluated |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2025-09-06 |
| Expires | 2026-09-05 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 12:12:11 shown | 352ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-20 09:57:30 | 565ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-02 18:52:15 | 915ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 11:52:05 | 1876ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 15:07:10 | 905ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:11:15 | 506ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:04:39 | 65535ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:00:45 | 1571ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:00:10 | 768ms | 2 NS 1 A 1 MX | 🔓 Insecure |