nicolajholm.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 December 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.97.133.238 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mail20.surftown.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 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 |
|---|---|---|---|---|---|---|---|
| 212.97.133.238 | 43200s | — | AS48854 | team.blue Denmark A/S | 212.97.132.0/22 | 🇩🇰 Denmark | Skanderborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail20.surftown.dk | — | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | nicolajholm.dk → 212.97.133.238 |
| 🔶 Autoconfig | nicolajholm.dk → 212.97.133.238 |
| www CNAME | nicolajholm.dk (all on nicolajholm.dk) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.nicolajholm.dk | nicolajholm.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026091001 |
| 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 | 2009-12-18 |
| Expires | 2026-12-31 (64d) |
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 |
|---|---|
| achieve-it.dk | Punktum dk A/S (direct) |
| achieveit.dk | Punktum dk A/S (direct) |
| ternetblog.dk | Punktum dk A/S (direct) |
| ternetblok.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 13:15:40 | 4619ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 10:13:00 | 4381ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 05:07:01 | 6442ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-10 18:35:04 shown | 16898ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-04 07:26:36 | 4649ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 21:04:37 | 8666ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-11 19:34:13 | 4698ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-18 09:56:30 | 16831ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-16 04:45:29 | 8659ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 04:12:00 | 4638ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 14:51:27 | 4485ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 08:00:37 | 4542ms | 2 NS 1 A 1 MX | ⚠️ Bogus |
| 2026-06-18 03:12:08 | 1844ms | 2 NS 1 A 1 MX | 🔒 Secure |