castec.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 23 September 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. We saw it become registrar-handled on 20 October 2026, when it moved from direct registration at Punktum to Simply.com A/S. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. 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.
| TXT Record |
|---|
| v=spf1 include:spf.simply.com ?all |
| Policy | Record (castec.dk) |
|---|---|
| ?all (neutral) | v=spf1 include:spf.simply.com ?all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves castec.dk: no address www.castec.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: ?all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101200 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2002-09-23 |
| Expires | 2027-09-30 (345d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 12:14:55 shown | 432ms | 4 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-06 07:35:58 | 707ms | 4 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-05 07:33:28 | 97ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-04 07:22:27 | 100ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-03 07:21:12 | 981ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-02 07:18:48 | 1338ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-10-01 07:09:40 | 526ms | 4 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-02 01:17:43 | 849ms | 4 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-16 19:49:18 | 474ms | 4 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-16 19:40:44 | 846ms | 4 NS 0 A 7 MX | 🔒 Secure |