linkcheck.dk is a .dk domain served by 2 nameservers (sri.ns.cloudflare.com, wally.ns.cloudflare.com). It was registered on 28 October 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.52.78 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by exchange.cphdomain.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.52.78 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.196.233 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | exchange.cphdomain.com | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:344e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:c4e9 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.52.78,172.67.196.233 ech=AEX+DQBBmwAgACB4CPAGGobwgEgU6RAfmbNJOfCuZ0xumGwEYVHIPBqWLAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:344e,2606:4700:3037::ac43:c4e9 |
| www | 104.21.52.78 172.67.196.233 2606:4700:3031::6815:344e 2606:4700:3037::ac43:c4e9 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network linkcheck.dk: 104.21.52.78 172.67.196.233 2606:4700:3031::6815:344e 2606:4700:3037::ac43:c4e9 (AS13335) www.linkcheck.dk: 104.21.52.78 172.67.196.233 2606:4700:3031::6815:344e 2606:4700:3037::ac43:c4e9 (AS13335) |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416777552 |
| Primary NS (MNAME) | sri.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Abion AB |
| Registered | 2002-10-28 |
| Expires | 2026-12-31 (71d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:30:52 shown | 1009ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-07 12:08:26 | 508ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-04 11:03:10 | 645ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 12:45:09 | 653ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 13:57:19 | 634ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-13 05:40:35 | 1524ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-06 04:59:54 | 735ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-08 19:35:07 | 1051ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-13 21:51:30 | 939ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 19:33:14 | 1127ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 17:57:38 | 1175ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:56:13 | 656ms | 2 NS 2 A 1 MX | 🔓 Insecure |