linux.dk is a .dk domain served by 3 nameservers (dns0.kyber.dk, dns1.kyber.dk, dns2.kyber.dk). It was registered on 13 June 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 139.162.133.239 is hosted by Akamai Connected Cloud (AS63949) in Germany. Mail is handled by mail.linux.dk. The zone is not DNSSEC-signed, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 139.162.133.239 | 8640s | — | AS63949 | Akamai Connected Cloud | 139.162.0.0/16 | 🇩🇪 Germany | Frankfurt am Main |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 8640s | mail.linux.dk | 130.225.213.110 | — | AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education |
| 20 | 8640s | mail.linux.dk | 130.225.213.110 | — | AS1835 FSKNET-DK Forskningsnettet - Danish network for Research and Education |
| TXT Record |
|---|
| Domain is free of use. Please go to DynDNS.dk to register a subdomain. |
| Ejet af jesper@angelo.dk - udlaant til SSLUG og linux interessenter |
| This domain is NOT for sale. Ever. |
| www CNAME | www.linux.org (all on linux.org) |
| www vs bare domain | Different networks linux.dk: 139.162.133.239 (AS63949) (all like this)www.linux.dk: 104.26.14.72 104.26.15.72 172.67.73.26 2606:4700:20::681a:e48 (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 | 2026100801 |
| Primary NS (MNAME) | dns0.kyber.dk |
| Responsible (RNAME) | dkguru@gmail.com |
| Refresh | 1080s |
| Retry | 180s |
| Expire | 60480s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1996-06-13 |
| Expires | 2031-06-30 (1716d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 03:07:15 | 708ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-08 15:02:18 shown | 1036ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-10-01 12:31:14 | 2641ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-24 11:35:33 | 823ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-20 04:26:22 | 2020ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-11 14:25:59 | 1930ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-04 01:03:01 | 1629ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-28 00:13:49 | 2765ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-27 23:17:16 | 867ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-20 17:02:01 | 1089ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-14 08:58:12 | 8406ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-06 21:37:11 | 902ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-05 19:47:44 | 2067ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-24 19:39:38 | 41509ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-23 17:53:35 | 9697ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-16 17:03:45 | 2505ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 23:55:43 | 2798ms | 3 NS 1 A 2 MX | 🔓 Insecure |