cool-cat.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 July 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. On 19 October 2026 we saw it transfer from ONE.COM A/S to Simply.com A/S. Its website address 87.104.29.156 is hosted by FIBIA P/S (AS44869) in Denmark. 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 |
|---|---|---|---|---|---|---|---|
| 87.104.29.156 | 3600s | 87.104.29.156.static.fibianet.dk | AS44869 | FIBIA P/S | 87.104.0.0/18 | 🇩🇰 Denmark | Taastrup |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| 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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026062903 |
| 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 | Simply.com A/S |
| Registered | 2024-07-01 |
| Expires | 2027-06-30 (252d) |
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).
| Domain | Registrar |
|---|---|
| sespåglenten.dk | Simply.com A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 16:41:09 | 784ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-10-11 06:53:10 | 586ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-06 02:12:27 | 408ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-10-01 01:44:01 | 375ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-17 05:08:41 | 512ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-31 23:35:39 | 422ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-30 20:46:01 | 1567ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-05 20:55:01 | 24956ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-01 23:09:28 | 443ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-30 02:24:17 shown | 433ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 22:16:14 | 469ms | 2 NS 1 A 0 MX | 🔒 Secure |