invalid.dk is a .dk domain served by 2 nameservers (ns-auth03.kmd.dk, ns-auth04.kmd.dk). It was registered on 26 April 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 131.165.111.156 is hosted by KMD A/S (AS6834) in Denmark. Mail is handled by .. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns-auth03.kmd.dk | 131.165.64.5 | ns-auth03.kmd.dk | AS6834 KMD A/S |
| ns-auth04.kmd.dk | 131.165.4.5 | ns-auth04.kmd.dk | AS6834 KMD A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 131.165.111.156 | 3600s | — | AS6834 | KMD A/S | 131.165.0.0/16 | 🇩🇰 Denmark | Hillerød |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (invalid.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.invalid.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;sp=reject;adkim=s;aspf=s;fo=1;pct=100;rua=mailto:dmarc@pensam.dk;ruf=mailto:dmarc@pensam.dk |
| www CNAME | invalid.dk (all on invalid.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 10 iterations · 16-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2310 |
| Primary NS (MNAME) | ns-auth03.kmd.dk |
| Responsible (RNAME) | dnsadmin@kmd.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 43200s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-04-26 |
| Expires | 2028-06-30 (615d) |
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 |
|---|---|---|---|
| 2026-10-23 12:06:05 | 444ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-22 04:56:09 | 1588ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-20 02:05:45 | 442ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-19 01:19:01 | 545ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-18 01:08:25 | 572ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-17 00:17:05 | 389ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-15 23:54:32 | 1097ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-14 22:52:39 | 619ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-13 22:31:14 | 1434ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-12 13:58:16 | 428ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 10:08:29 | 1355ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-10 08:01:11 | 649ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 05:42:01 | 2455ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 05:36:15 | 794ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-07 05:33:17 | 1251ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 04:12:03 | 1352ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 04:08:10 | 598ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 03:50:16 | 657ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 03:49:34 | 355ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 03:48:06 | 1451ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 03:30:41 | 469ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 09:34:21 shown | 648ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 09:28:23 | 539ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-28 09:15:00 | 519ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 19:31:32 | 553ms | 2 NS 1 A 1 MX | 🔓 Insecure |