blackcity.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 7 October 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 | Address record (no CNAME) |
| 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 | registry sentinel delegation (no resolvable NS); DNSSEC not evaluated |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2025-10-07 |
| Expires | 2026-10-06 (expired) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 22:05:08 shown | 250ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-17 21:09:24 | 146ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-16 20:13:17 | 226ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-15 18:32:58 | 206ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-14 17:02:02 | 161ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-13 16:31:38 | 110ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-12 12:25:58 | 224ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-11 11:18:08 | 414ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-10 08:55:29 | 227ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-09 03:46:06 | 619ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-08 03:43:25 | 761ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-04 02:06:51 | 491ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 01:38:35 | 482ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 06:27:40 | 473ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 00:34:41 | 1579ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 14:45:37 | 561ms | 3 NS 1 A 1 MX | 🔒 Secure |