gnuskole.dk is a .dk domain served by 2 nameservers (kirk.ns.cloudflare.com, serena.ns.cloudflare.com). It was registered on 18 June 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.216 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed but currently fails validation, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.13.216 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.133.62 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:dd8 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:853e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.13.216,172.67.133.62 ech=AEX+DQBBmAAgACDfDiA8xc92kuaz2LwTl2RYEC9S5DPWPdpWYke7/BM3DwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:dd8,2606:4700:3037::ac43:853e |
| www | 104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network gnuskole.dk: 104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335) www.gnuskole.dk: 104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335) |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'gnuskole.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2407237066 |
| Primary NS (MNAME) | kirk.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2013-06-18 |
| Expires | 2027-06-30 (252d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 13:47:30 | 576ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-25 21:11:37 | 550ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-24 20:51:14 | 608ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-19 15:58:35 | 9442ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-17 16:36:53 | 1840ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-27 17:37:13 | 863ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-04 13:50:10 | 1036ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-19 09:42:43 shown | 789ms | 2 NS 2 A 0 MX | ⚠️ Bogus |
| 2026-06-17 09:47:29 | 544ms | 2 NS 2 A 0 MX | 🔓 Insecure |