znn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 December 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.177.21.90 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by spock.dk. 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 |
|---|---|---|---|---|---|---|---|
| 188.177.21.90 | — | 188-177-21-90-static.dk.customer.tdc.net | AS3292 | TDC Holding A/S | 188.176.0.0/13 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | spock.dk | 90.184.0.97 | x5ab80061.customers.hiper-net.dk | AS203953 Hiper A/S |
| www CNAME | znn.dk (all on znn.dk) → 188.177.21.90 (AS3292) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052401 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2001-12-20 |
| Expires | 2026-12-31 (68d) |
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 |
|---|---|---|---|
| 2026-10-22 21:49:46 | 1427ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 00:17:25 | 409ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-25 07:52:31 | 827ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 05:37:39 | 1187ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-16 04:20:37 | 1013ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 14:28:05 | 1519ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 13:28:01 | 1796ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-26 07:32:43 | 2568ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 23:11:35 | 838ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 08:36:17 | 597ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 13:12:37 | 643ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 14:33:12 shown | 878ms | 2 NS 1 A 1 MX | 🔒 Secure |