cederhorn.dk is a .dk domain served by 3 nameservers (auth01.ns.dk-hostmaster.dk, auth02.ns.dk-hostmaster.dk, auth03.ns.dk-hostmaster.dk). It was registered on 3 March 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, publishes a 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.
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (cederhorn.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.cederhorn.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves cederhorn.dk: no address www.cederhorn.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026080900 |
| Primary NS (MNAME) | auth01.ns.dk-hostmaster.dk |
| Responsible (RNAME) | tech@punktum.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2022-03-03 |
| Expires | 2027-03-02 (136d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 18:29:41 | 447ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-11 16:13:12 | 846ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-09 10:20:42 | 841ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-06 04:22:03 | 1169ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-05 04:18:23 | 337ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-30 03:45:54 | 489ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-29 03:39:43 | 404ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-24 01:57:09 | 522ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-20 08:38:01 | 788ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-13 07:54:11 | 516ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-07 04:21:01 | 1370ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-30 19:21:38 | 355ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-29 16:45:23 | 855ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-25 22:58:55 | 526ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-24 09:42:28 | 8630ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-23 02:45:32 | 1142ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-18 21:57:49 | 1744ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-17 06:29:30 | 1640ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-15 17:42:13 | 6054ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-12 03:40:01 | 2268ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-09 22:38:40 shown | 591ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-08 20:36:25 | 576ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-02 05:22:30 | 736ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-24 01:30:55 | 761ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-23 00:54:56 | 645ms | 3 NS 0 A 0 MX | 🔒 Secure |