esbo-byg.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 2016 (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 | Address record (no CNAME) |
| Wildcard | No |
| 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 |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2016-09-06 |
| Expires | 2026-09-30 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-25 11:05:00 shown | 324ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-24 05:53:26 | 108ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-22 16:38:25 | 621ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-20 13:13:10 | 191ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-19 08:20:22 | 231ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-18 05:27:19 | 131ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-17 05:12:43 | 218ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-16 04:19:43 | 374ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-15 03:45:58 | 249ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-14 01:38:08 | 218ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-12 21:36:00 | 235ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-11 19:50:37 | 221ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-10 18:24:07 | 217ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-09 10:19:41 | 1157ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-08 09:31:50 | 257ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-07 09:23:47 | 116ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-06 09:01:47 | 116ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-05 07:54:05 | 124ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-04 07:49:55 | 193ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-03 07:49:34 | 100ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-02 07:48:19 | 890ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-01 07:44:06 | 476ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 16:13:56 | 457ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 00:58:18 | 562ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 08:25:46 | 321ms | 2 NS 1 A 1 MX | 🔒 Secure |