mentorbyheart.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. 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 | Address record (no CNAME) |
| 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 | registry sentinel delegation (no resolvable NS); DNSSEC not evaluated |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 01:03:06 | 501ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-28 19:39:15 | 498ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-27 19:36:57 | 220ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-26 19:22:55 | 202ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-25 19:10:32 | 227ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-24 18:52:24 | 771ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-24 11:03:12 | 221ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-23 10:49:16 shown | 230ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-16 18:58:10 | 290ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-15 13:46:20 | 877ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-14 17:10:52 | 235ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-11 10:36:47 | 2477ms | 1 NS 0 A 0 MX | ❓ Unknown |