gnux.dk is a .dk domain served by 2 nameservers (cleo.ns.cloudflare.com, nia.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.firstimpact.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|
| cleo.ns.cloudflare.com | — | — | — |
| nia.ns.cloudflare.com | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 3 | — | mx.firstimpact.com | 139.162.152.121 | vps.fiw.dk | AS63949 Akamai Connected Cloud |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (gnux.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.gnux.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:85a7aa5e27e3469ab3eedc3174b9e6bd@dmarc-reports.cloudflare.net |
| www | Exists, no address |
| www vs bare domain | Neither resolves gnux.dk: no address www.gnux.dk: no address |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 2407030534 |
| Primary NS (MNAME) | cleo.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 23:56:52 | 922ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-21 09:17:22 | 2584ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-02 02:54:58 | 651ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-27 05:06:51 | 664ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-25 13:10:42 | 2594ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-05 20:12:03 | 1436ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-10 06:27:53 | 8918ms | 2 NS 0 A 1 MX | ❓ Unknown |
| 2026-06-28 22:18:54 | 970ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-21 06:40:25 | 516ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-17 09:45:46 shown | 565ms | 2 NS 0 A 1 MX | 🔓 Insecure |