justfuck.dk is a .dk domain served by 2 nameservers (irma.ns.cloudflare.com, thomas.ns.cloudflare.com). It was registered on 19 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.102.91.50 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mail.justfuck.dk. The zone is DNSSEC-signed but currently fails validation, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 91.102.91.50 | — | — | AS47292 | Sentia Denmark A/S | 91.102.88.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.justfuck.dk | 91.102.91.52 | 52.48-55.91.102.91.in-addr.arpa | AS47292 Sentia Denmark A/S |
| Policy | Record (_dmarc.justfuck.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc-agg@12net.dk; ruf=mailto:dmarc-afrf@12net.dk; fo=1; |
| www CNAME | justfuck.dk (all on justfuck.dk) → 91.102.91.50 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Check | Result |
|---|---|
| Validation Status | ⚠️ Bogus |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'justfuck.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2406780592 |
| Primary NS (MNAME) | irma.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 | 2012-12-19 |
| Expires | 2026-12-31 (65d) |
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 |
|---|---|---|---|
| 2026-10-14 03:57:00 | 4237ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 23:37:21 | 815ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-03 00:42:44 | 1419ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-30 19:16:11 | 1459ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-17 00:55:43 | 1115ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 20:09:42 | 948ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 15:27:19 shown | 930ms | 2 NS 1 A 1 MX | ⚠️ Bogus |