guldagermadsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 August 2005 (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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | guldagermadsen.dk |
| 🔶 Autoconfig | guldagermadsen.dk |
| www CNAME | guldagermadsen.dk (all on guldagermadsen.dk) |
| www vs bare domain | Neither resolves guldagermadsen.dk: no address www.guldagermadsen.dk: no address |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.guldagermadsen.dk | guldagermadsen.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026100101 |
| 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 | ONE.COM A/S |
| Registered | 2005-08-08 |
| Expires | 2027-08-31 (312d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 09:11:30 shown | 556ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-01 15:04:43 | 2835ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-28 14:29:12 | 876ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-27 14:19:08 | 949ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-24 03:14:44 | 996ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-27 15:25:59 | 1143ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-27 01:06:28 | 1598ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-21 06:06:32 | 1512ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-21 05:29:39 | 924ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 00:48:56 | 2740ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-18 22:16:17 | 1090ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-17 10:01:08 | 9487ms | 2 NS 0 A 7 MX | 🔒 Secure |