firmarengøring.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 10 January 2021 (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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.simply.com | — | — | — |
| ns2.simply.com | — | — | — |
| ns3.simply.com | — | — | — |
| ns4.simply.com | — | — | — |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves firmarengøring.dk: no address www.firmarengøring.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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxdomain |
| Field | Value |
|---|---|
| Serial | 2021081600 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2021-01-10 |
| Expires | 2027-01-31 (97d) |
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 |
|---|---|---|---|
| 2026-10-08 14:38:18 | 315ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-10-01 21:30:45 | 347ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-02 02:11:37 | 429ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-27 14:41:24 | 619ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-02 11:55:43 | 519ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-25 10:27:53 | 1726ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-06-25 06:39:26 | 2492ms | 4 NS 0 A 0 MX | ⚠️ Bogus |
| 2026-06-24 12:42:43 | 299ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-24 03:07:12 | 1120ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 06:06:09 | 920ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 14:13:42 | 613ms | 4 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-21 02:45:45 | 316ms | 0 NS 0 A 0 MX | 🔒 Secure |
| 2026-06-17 09:45:30 shown | 533ms | 4 NS 0 A 0 MX | 🔒 Secure |