4420.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| 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 | 2026092401 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 15:59:40 shown | 336ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 17:32:00 | 499ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 03:59:22 | 481ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 09:03:41 | 561ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-25 20:02:18 | 371ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-25 03:45:29 | 573ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 13:35:19 | 503ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 00:52:03 | 476ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 14:42:51 | 567ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 12:51:45 | 2886ms | 2 NS 1 A 0 MX | 🔒 Secure |