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 our latest 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 (221d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 19:01:35 shown | 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 | 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 |