kursusbygningen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 November 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is DNSSEC-signed and validates, 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 CNAME | ghs.google.com (all on google.com) |
| www vs bare domain | Only www resolves kursusbygningen.dk: no address (all like this)www.kursusbygningen.dk: 172.217.20.179 2a00:1450:400f:807::2013 (AS15169) |
| 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 | 2026101301 |
| 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 | 2006-11-20 |
| Expires | 2026-11-30 (35d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 09:23:36 | 838ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-14 05:29:31 shown | 644ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-23 14:07:15 | 931ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-13 10:32:40 | 635ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-28 08:46:06 | 836ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-02 09:49:04 | 3518ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-17 19:17:19 | 953ms | 2 NS 0 A 7 MX | 🔒 Secure |