gulstrøm.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 14 September 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.39.198 is hosted by FIBIA P/S (AS44869) in Denmark. The zone is DNSSEC-signed but currently fails validation, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 5.103.39.198 | 3600s | 5.103.39.198.static.fibianet.dk | AS44869 | FIBIA P/S | 5.103.0.0/16 | 🇩🇰 Denmark | Holbæk |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| 🔶 Autoconfig | xn--gulstrm-v1a.dk → 5.103.39.198 |
| TXT Record |
|---|
| google-site-verification=csnoWC2GqNNhHSsetRvfcbe2-iMWdtD1oSC8D0NP1gY |
| google-site-verification=GotEhDcS9PD9jLP74JsihQc0EkbgN8qrmLskIPfzRBc |
| google-site-verification=IHcSqLB6iRbiLsKuTtqfxoH0DT0ux0W5us2aHy7GpJE |
| MS=ms61495145 |
| v=spf1 mx ip4:5.103.39.212 include:spf.protection.outlook.com a:mail.nrgi.dk include:trustpilotservice.com include:spf.mandrillapp.com include:rnmk.com ~all |
| Policy | Record (gulstrøm.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx ip4:5.103.39.212 include:spf.protection.outlook.com a:mail.nrgi.dk include:trustpilotservice.com include:spf.mandrillapp.com include:rnmk.com ~all |
| www | 5.103.39.198 (AS44869) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 8/10 · policy: ~all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.gulstrøm.dk | xn--gulstrm-v1a.dk |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 2026061001 |
| 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 | 2012-09-14 |
| Expires | 2027-09-30 (341d) |
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 |
|---|---|
| gul-gas.dk | Punktum dk A/S (direct) |
| gul-stroem.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 15:59:13 | 1519ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 06:53:25 | 1118ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 22:09:19 | 900ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 23:12:08 | 875ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 00:15:30 | 1017ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-10 08:56:51 | 1842ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 06:05:03 | 1912ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 16:16:48 | 6190ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 16:45:49 | 10028ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-13 14:36:14 | 6222ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 08:25:15 | 1280ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-29 10:11:10 | 779ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 12:40:21 | 2131ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-25 00:18:59 shown | 611ms | 2 NS 1 A 0 MX | ⚠️ Bogus |
| 2026-06-24 22:50:24 | 2184ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-20 03:37:07 | 1037ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 10:48:39 | 1598ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 10:41:27 | 987ms | 2 NS 1 A 1 MX | 🔒 Secure |