holdkursen.dk is a registered .dk domain whose nameservers (ns1.netfirms.com, ns2.netfirms.com) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 17 May 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 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 |
|---|---|---|---|
| ns1.netfirms.com | 162.159.24.252 | — | AS13335 Cloudflare, Inc. |
| ns2.netfirms.com | 162.159.25.208 | — | AS13335 Cloudflare, Inc. |
| 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 | Punktum dk A/S (direct) |
| Registered | 2012-05-17 |
| Expires | 2027-05-31 (216d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 19:01:35 | 4552ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-30 12:35:55 | 4289ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-09-10 05:46:31 | 4342ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-26 06:44:38 | 4394ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-23 17:49:50 | 2776ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-22 16:09:21 | 3464ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-21 15:43:39 | 4607ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-20 15:29:08 | 4744ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-19 12:15:58 | 17756ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-18 12:06:16 shown | 20804ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-16 12:22:58 | 24737ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-15 09:30:55 | 4089ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-12 17:25:14 | 23334ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-11 05:04:12 | 25089ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-10 03:24:15 | 22901ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-07 14:59:18 | 10527ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-08-06 09:10:37 | 5297ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-30 07:34:18 | 38112ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-28 04:42:19 | 32137ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-27 04:31:29 | 4857ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-26 04:14:16 | 5836ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-25 03:40:53 | 5284ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-24 03:08:10 | 12917ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-23 00:14:45 | 4462ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-20 22:10:26 | 5406ms | 2 NS 0 A 0 MX | ❓ Unknown |