c5dk.dk is a .dk domain served by 2 nameservers (ns1.concrete5danmark.dk, ns2.concrete5danmark.dk). It was registered on 19 December 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is of unknown DNSSEC status, has no 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 |
|---|---|---|---|
| ns1.concrete5danmark.dk | 88.99.120.238 | ns1.dnshotel.dk | AS24940 Hetzner Online GmbH |
| ns2.concrete5danmark.dk | 94.130.170.39 | ns2.dnshotel.dk | AS24940 Hetzner Online GmbH |
| www CNAME | c5dk.dk (all on c5dk.dk) |
| www vs bare domain | Same network c5dk.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940) www.c5dk.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: timed out |
| Field | Value |
|---|---|
| Serial | 2026061303 |
| Primary NS (MNAME) | ns1.concrete5danmark.dk |
| Responsible (RNAME) | server-admin@azehosting.net |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-12-19 |
| Expires | 2026-12-31 (74d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 17:22:57 | 3006ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-13 15:45:51 | 628ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 09:42:09 | 1010ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 04:37:25 | 1210ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 04:30:46 | 551ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 04:21:05 | 1065ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 04:46:02 | 1942ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 04:42:39 | 928ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 04:38:16 | 682ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 20:48:50 | 828ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 20:41:36 | 798ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 21:19:42 | 745ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 21:10:11 | 772ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-25 20:54:00 | 907ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 20:38:28 | 843ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 11:51:13 | 7349ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 22:10:42 | 713ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 20:40:10 | 4945ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-16 17:02:12 | 3322ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-15 05:38:30 | 8689ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-11 08:59:10 | 10308ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-09 10:45:46 | 4624ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-06 00:41:43 | 1108ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-28 08:04:43 shown | 28820ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-27 07:31:05 | 1690ms | 2 NS 1 A 1 MX | ❓ Unknown |