dns4.dk is a .dk domain served by 5 nameservers (dns1.dk, dns2.dk, dns3.dk and 2 more). It was registered on 3 December 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.223.66.142 is hosted by Hetzner Online GmbH (AS215859) in Singapore. Mail is handled by .. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 5.223.66.142 | 3600s | dns4.dk | AS215859 | Hetzner Online GmbH | 5.223.0.0/16 | 🇸🇬 Singapore | Singapore |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a01:4ff:2f0:31b6::1 | 3599s | dns4.dk | AS215859 | Hetzner Online GmbH | 2a01:4ff:200:0:0:0:0:0/40 | 🇸🇬 Singapore | Singapore |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (dns4.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.dns4.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; aspf=s; adkim=s |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt · opt-out RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100702 |
| Primary NS (MNAME) | dns1.dk |
| Responsible (RNAME) | support@borndata.dk |
| Refresh | 3600s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2012-12-03 |
| Expires | 2028-12-31 (806d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 23:37:20 | 1427ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-07 15:47:27 shown | 1372ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-04 11:39:16 | 775ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 22:41:12 | 839ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-26 21:54:15 | 1161ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 20:43:23 | 2556ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-23 18:18:56 | 763ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-19 13:43:28 | 2959ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-12 12:06:17 | 4611ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-05 21:28:22 | 5362ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-31 07:37:40 | 1470ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-26 11:15:17 | 2290ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-20 12:24:39 | 7200ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-16 10:29:02 | 2141ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-10 20:44:19 | 2963ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-08-06 04:34:45 | 2149ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-26 19:00:08 | 3315ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-21 05:56:49 | 8945ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-16 20:13:06 | 9788ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-15 16:53:07 | 1564ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-06 12:54:49 | 1760ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-07-01 18:41:05 | 1004ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-28 09:17:05 | 1191ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-21 17:05:20 | 2472ms | 5 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-17 04:22:56 | 15418ms | 5 NS 1 A 0 MX | 🔒 Secure |