frankknudsen.dk is a .dk domain served by 2 nameservers (ken.ns.cloudflare.com, lily.ns.cloudflare.com). It was registered on 4 February 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.57.208 is hosted by Cloudflare, Inc. (AS13335). 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 |
|---|---|---|---|---|---|---|---|
| 104.21.57.208 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.149.241 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:95f1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:39d0 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.57.208,172.67.149.241 ech=AEX+DQBBcgAgACCy1SXKC9bIdXxpmYTRh7pCWGVChQvOTgI30gHSDSkeZwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:95f1,2606:4700:3037::6815:39d0 |
| www | 104.21.57.208 172.67.149.241 2606:4700:3031::ac43:95f1 2606:4700:3037::6815:39d0 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network frankknudsen.dk: 104.21.57.208 172.67.149.241 2606:4700:3031::ac43:95f1 2606:4700:3037::6815:39d0 (AS13335) www.frankknudsen.dk: 104.21.57.208 172.67.149.241 2606:4700:3031::ac43:95f1 2606:4700:3037::6815:39d0 (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 | 2417036413 |
| Primary NS (MNAME) | ken.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2020-02-04 |
| Expires | 2028-04-30 (560d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 21:04:34 shown | 436ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-10-06 12:31:27 | 406ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 11:23:35 | 407ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-30 02:06:48 | 457ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-27 00:10:56 | 2399ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-04 01:34:50 | 2378ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-27 10:08:58 | 615ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-25 11:00:13 | 532ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-09 08:47:52 | 8904ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-06-20 06:18:31 | 879ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-17 10:06:54 | 4806ms | 2 NS 2 A 0 MX | 🔓 Insecure |