centrex.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 6 May 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx09.posthuset.nu, mx11.posthuset.nu. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mx09.posthuset.nu | 185.21.40.130 | vm1220.enterprisecloud.nu | AS48854 team.blue Denmark A/S |
| 20 | 43200s | mx11.posthuset.nu | 185.21.40.130 | vm1220.enterprisecloud.nu | AS48854 team.blue Denmark A/S |
| TXT Record |
|---|
| Posthuset |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026092601 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2002-05-06 |
| Expires | 2027-06-30 (256d) |
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 |
|---|---|
| bolværket.dk | Punktum dk A/S (direct) |
| brombærhaven.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:00:47 shown | 673ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-30 08:00:58 | 2355ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-27 16:08:53 | 743ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-21 07:50:10 | 690ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-04 17:50:48 | 520ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-21 16:14:45 | 608ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-21 16:05:50 | 1008ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 06:02:33 | 1243ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-19 17:11:36 | 535ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-16 20:06:17 | 445ms | 2 NS 0 A 2 MX | 🔒 Secure |