fibregen.dk is a .dk domain served by 3 nameservers (x.ns.joker.com, y.ns.joker.com, z.ns.joker.com). It was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|
| x.ns.joker.com | — | — | — |
| y.ns.joker.com | — | — | — |
| z.ns.joker.com | — | — | — |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves fibregen.dk: no address www.fibregen.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 16-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025031057 |
| Primary NS (MNAME) | x.ns.joker.com |
| Responsible (RNAME) | hostmaster@joker.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:21:18 | 736ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-06 05:26:19 | 2466ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-08-28 05:42:45 | 9489ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-26 22:15:55 | 34181ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-22 17:48:06 | 796ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-20 04:00:39 | 924ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-17 09:40:08 shown | 1583ms | 3 NS 0 A 0 MX | 🔓 Insecure |