acme-challenge.dk is a .dk domain served by 4 nameservers (ns1.dnscluster.dk, ns2.dnscluster.dk, ns3.dnscluster.dk and 1 more). It was registered on 10 November 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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.
| www | NXDOMAIN |
| www vs bare domain | Neither resolves acme-challenge.dk: no address www.acme-challenge.dk: no address |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026103075 |
| Primary NS (MNAME) | ns1.dnscluster.dk |
| Responsible (RNAME) | hostmaster@acme-challenge.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | PerfGrid |
| Registered | 2021-11-10 |
| Expires | 2028-11-09 (754d) |
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).
| Domain | Registrar |
|---|---|
| hcdn.dk | PerfGrid |
| hosting4real.dk | PerfGrid |
| ns5.dk | PerfGrid |
| request.dk | PerfGrid |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 12:30:44 | 1031ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-15 10:33:04 | 2952ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-14 08:51:45 | 2362ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-13 06:00:33 | 2411ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-12 04:20:39 | 2103ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-11 01:21:33 | 3348ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-09 22:02:20 | 1065ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-08 19:10:59 | 2113ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-07 19:07:25 | 2345ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-06 18:56:35 | 4129ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-05 17:48:47 | 1078ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-04 17:45:32 | 1676ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-03 17:30:34 | 904ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-02 17:29:49 | 999ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-10-01 17:26:03 | 1188ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-30 17:16:16 | 1100ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-29 17:05:56 | 1086ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-28 16:53:31 | 1052ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-27 16:43:14 | 953ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-26 16:37:54 | 2420ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-25 17:54:15 | 943ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-24 17:33:14 | 2877ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-23 16:00:23 | 912ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-19 15:49:35 | 3462ms | 4 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-18 07:35:17 shown | 3265ms | 4 NS 0 A 0 MX | 🔓 Insecure |