externtlink.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 March 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 2.106.120.249 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by .. 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 |
|---|---|---|---|---|---|---|---|
| 2.106.120.249 | 3600s | hval.dk | AS3292 | TDC Holding A/S | 2.104.0.0/14 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | externtlink.dk → 2.106.120.249 |
| 🔶 Autoconfig | externtlink.dk → 2.106.120.249 |
| TXT Record |
|---|
| HARICA-LBm6c21qB6tfVVr5eTy |
| www CNAME | externtlink.dk (all on externtlink.dk) → 2.106.120.249 (AS3292) |
| 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.externtlink.dk | externtlink.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101201 |
| 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 | 2011-03-09 |
| Expires | 2027-03-31 (162d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 21:59:07 | 1369ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 21:05:10 shown | 634ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-15 19:39:38 | 433ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 17:30:54 | 1154ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 08:23:06 | 805ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 11:34:01 | 879ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 04:56:58 | 1106ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 15:55:20 | 1099ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 01:27:51 | 801ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 09:10:08 | 1565ms | 2 NS 1 A 4 MX | 🔒 Secure |