klasse-appen.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 4 October 2026 (WHOIS) and first appeared in the .dk zone on 5 October 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 CNAME | klasse-appen.onrender.com (all on onrender.com) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| 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 | ONE.COM A/S |
| Registered | 2026-10-04 |
| Expires | 2027-10-03 (345d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 17:50:04 | 1077ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 10:59:16 | 541ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 01:10:57 | 1757ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 01:05:01 | 653ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-07 10:48:52 | 147ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-06 09:10:25 | 97ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-05 08:39:09 shown | 648ms | 1 NS 0 A 0 MX | ❓ Unknown |