4kb.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 mail.4kb.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 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 |
|---|---|---|---|---|---|
| 15 | 43200s | mail.4kb.dk | 195.128.174.78 | vdom94.net.dk2.zitcom.dk | AS48854 team.blue Denmark A/S |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101101 |
| 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 |
|---|---|---|---|
| 2026-10-13 00:46:01 shown | 852ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 04:56:10 | 400ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-14 01:22:24 | 446ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-11 17:34:21 | 657ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-12 12:16:18 | 2639ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-17 22:03:39 | 2565ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-13 15:19:26 | 791ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-28 04:10:29 | 584ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 14:59:13 | 928ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 14:13:20 | 564ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 12:53:28 | 956ms | 2 NS 0 A 1 MX | 🔒 Secure |