gudmundolsson.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 January 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.19.231.180 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mail.gudmundolsson.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 81.19.231.180 | 30s | web11.oemhost.net | AS47292 | Sentia Denmark A/S | 81.19.224.0/20 | 🇩🇰 Denmark | Albertslund |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 30s | mail.gudmundolsson.dk | 81.19.231.177 | web08.oemhost.net | AS47292 Sentia Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 81.19.231.180 |
| 🔶 Autoconfig | 81.19.231.180 |
| www | 81.19.231.180 (AS47292) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 | delv transient; dig AD confirmed |
| Field | Value |
|---|---|
| Serial | 2026102102 |
| 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 | 2002-01-09 |
| Expires | 2026-11-30 (36d) |
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 |
|---|---|
| convexa.dk | Punktum dk A/S (direct) |
| hallengren.dk | Punktum dk A/S (direct) |
| kairosnav.dk | ONE.COM A/S |
| klampenborgvej.dk | Punktum dk A/S (direct) |
| sejlerskab.dk | ONE.COM A/S |
| skippermetoden.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-24 06:57:32 shown | 528ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 20:11:34 | 1148ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 02:37:49 | 565ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-12 03:51:54 | 845ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-14 21:48:17 | 4773ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 14:54:45 | 3038ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 16:07:54 | 1907ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-13 04:49:58 | 797ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 18:47:48 | 1773ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 19:08:12 | 2507ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 06:51:00 | 1309ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 03:20:39 | 739ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 10:36:32 | 637ms | 2 NS 1 A 1 MX | 🔒 Secure |