copenhagenfibers.dk is a .dk domain served by 2 nameservers (marvin.ns.cloudflare.com, mira.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.52.243 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 |
|---|---|---|---|---|---|---|---|
| 104.21.52.243 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.205.212 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:cdd4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:34f3 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.52.243,172.67.205.212 ech=AEX+DQBBwwAgACBWsgAkONUSzcIOieAd82NhsPUyOjw0lnuJR7KZyKStDAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:cdd4,2606:4700:3037::6815:34f3 |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve copenhagenfibers.dk: 104.21.52.243 172.67.205.212 2606:4700:3034::ac43:cdd4 2606:4700:3037::6815:34f3 (AS13335) (all like this)www.copenhagenfibers.dk: no address |
| 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 | 2415370326 |
| Primary NS (MNAME) | marvin.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-22 00:48:00 shown | 447ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-26 09:18:39 | 516ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-23 15:06:16 | 672ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-19 23:51:37 | 664ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-09-07 08:59:18 | 2048ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-25 11:12:49 | 460ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-21 22:53:17 | 1210ms | 2 NS 2 A 0 MX | ❓ Unknown |
| 2026-07-04 21:05:46 | 3308ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-30 15:01:30 | 851ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 22:25:24 | 314ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-06-16 22:20:25 | 432ms | 2 NS 2 A 0 MX | 🔓 Insecure |