nicolajholm.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It 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 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 |
|---|---|---|---|---|---|---|---|
| 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 | 2026101101 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 13:15:40 shown | 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 | 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 |