tdcsecurity.dk is a .dk domain served by 2 nameservers (dns1.netdesign.dk, dns2.netdesign.dk). It was registered on 17 December 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns1.netdesign.dk | 91.199.190.51 | dns1.netdesign.dk | AS3292 TDC Holding A/S |
| dns2.netdesign.dk | 91.199.190.52 | dns2.netdesign.dk | AS3292 TDC Holding A/S |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves tdcsecurity.dk: no address www.tdcsecurity.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 14-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 3900 |
| Primary NS (MNAME) | dns1.netdesign.dk |
| Responsible (RNAME) | itservicedesk@netdesign.dk |
| Refresh | 14400s |
| Retry | 1440s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 900s |
| Field | Value |
|---|---|
| Registrar | Eurodns S.A |
| Registered | 2015-12-17 |
| Expires | 2026-12-31 (73d) |
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 482.
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-18 02:34:07 shown | 509ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-17 01:42:48 | 517ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-16 01:25:38 | 1593ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-14 22:20:35 | 665ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-13 20:18:27 | 1406ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-12 19:00:17 | 787ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-11 18:09:33 | 1077ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-10 16:52:08 | 345ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-08 20:12:18 | 1350ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-07 20:07:37 | 423ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-06 19:57:16 | 324ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-05 19:53:51 | 426ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-04 19:46:52 | 479ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-03 19:45:18 | 506ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-02 19:42:59 | 520ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-01 19:41:31 | 1900ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-30 19:24:14 | 474ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-29 19:15:07 | 662ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-28 19:09:26 | 445ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-27 18:58:35 | 428ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-26 18:49:23 | 462ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-25 18:30:42 | 415ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-24 18:18:59 | 386ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-23 16:44:30 | 1072ms | 2 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-16 16:14:22 | 509ms | 2 NS 0 A 0 MX | 🔒 Secure |