linuxlabs.dk is a .dk domain served by 2 nameservers (becky.ns.cloudflare.com, cesar.ns.cloudflare.com). It was registered on 13 November 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.62.173 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route3.mx.cloudflare.net, route2.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed but currently fails validation, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.62.173 | — | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.137.227 | — | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:89e3 | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:3ead | — | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.62.173,172.67.137.227 ech=AEX+DQBBUgAgACBikhzZAr7Rk2pMlFm723zwb2k97MV6NY84MH+YnyTnJgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:89e3,2606:4700:3037::6815:3ead |
| TXT Record |
|---|
| google-site-verification=EWJieeV98v7sEdp4-zH0DGRYVbTXNnApbr1uN54HdrE |
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (linuxlabs.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve linuxlabs.dk: 104.21.62.173 172.67.137.227 2606:4700:3032::6815:3ead 2606:4700:3037::ac43:89e3 (AS13335) (all like this)www.linuxlabs.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'linuxlabs.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2406675293 |
| Primary NS (MNAME) | becky.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2019-11-13 |
| Expires | 2026-11-30 (36d) |
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 |
|---|---|---|---|
| 2026-10-20 14:08:30 | 663ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-19 12:23:19 | 700ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-18 11:57:21 | 1074ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-10-06 13:49:34 | 568ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-29 12:49:48 | 2236ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-09-17 06:00:50 | 1354ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-27 13:55:40 | 9827ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-27 08:36:29 | 2724ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-21 04:51:24 | 15455ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-20 04:09:19 | 1874ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-08 15:07:26 | 10731ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-08-04 09:17:05 | 2605ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-25 13:40:27 | 1225ms | 2 NS 2 A 3 MX | 🔓 Insecure |
| 2026-06-18 02:18:19 shown | 2412ms | 2 NS 2 A 3 MX | ⚠️ Bogus |