itsf.dk is a .dk domain served by 2 nameservers (ns3.supportcenter.dk, ns4.supportcenter.dk). It was registered on 30 November 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is DNSSEC-signed and validates, publishes a 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns3.supportcenter.dk | 87.54.32.150 | — | AS3292 TDC Holding A/S |
| ns4.supportcenter.dk | 2.106.7.200 | ns4.supportcenter.dk | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| HARICA-jQ3llNEBJDklK6cZkzf |
| MS=ms19823412 |
| v=spf1 -all |
| Policy | Record (itsf.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.itsf.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject;rua=mailto:dmarc@via.dk; ruf=mailto:dmarc@via.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves itsf.dk: no address www.itsf.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 831 |
| Primary NS (MNAME) | ns3.supportcenter.dk |
| Responsible (RNAME) | hostmaster@supportcenter.dk |
| Refresh | 900s |
| Retry | 600s |
| Expire | 86400s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2006-11-30 |
| Expires | 2026-11-30 (38d) |
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).
Showing 100 of 117.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-21 09:12:55 | 862ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-20 07:16:33 | 817ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-14 22:30:35 | 324ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-13 22:13:49 | 3163ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-12 19:36:54 | 830ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-11 18:44:38 | 792ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-08 12:20:17 | 325ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-06 14:09:32 | 1088ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-04 13:30:50 | 452ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-03 13:30:23 | 321ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-03 00:14:55 | 4101ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-01 23:59:44 | 351ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-27 23:15:49 | 415ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-26 22:56:59 | 426ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-25 22:36:30 | 430ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-24 22:21:17 | 474ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 21:46:11 | 348ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-20 16:54:58 | 2618ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-15 09:21:18 | 574ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-09 16:42:09 | 799ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-08 01:35:48 | 355ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-31 12:17:39 | 1328ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-28 23:22:47 | 857ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-25 15:32:09 | 435ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-23 23:03:41 | 627ms | 2 NS 0 A 1 MX | 🔒 Secure |