4xs.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.130 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod5-cph3.one.com, mx2.pub.mailpod5-cph3.one.com and 1 more. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.213.130 | — | webcluster1.webpod14-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx1.pub.mailpod5-cph3.one.com | 185.164.14.54 | mx1.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| 10 | — | mx2.pub.mailpod5-cph3.one.com | 185.164.14.55 | mx2.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| 10 | — | mx3.pub.mailpod5-cph3.one.com | 185.164.14.56 | mx3.pub.mailpod5-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10c:11:87b3:2a61:948b | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com -all |
| Policy | Record (4xs.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_custspf.one.com -all |
| Policy | Record (_dmarc.4xs.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 46.30.213.130 2a02:2350:5:10c:11:87b3:2a61:948b (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network 4xs.dk: 46.30.213.130 2a02:2350:5:10c:11:87b3:2a61:948b (AS51468) www.4xs.dk: 46.30.213.130 2a02:2350:5:10c:11:87b3:2a61:948b (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| SMTP _25._tcp.mx2.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| SMTP _25._tcp.mx3.pub.mailpod5-cph3.one.com | DANE-EE · SPKI · SHA-256 | D8DFA3FF2BFC8029FC54CAE58297D988… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061603 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 20:37:46 | 2065ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-09 09:40:10 | 1148ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 21:42:39 | 713ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 03:57:33 | 869ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-28 07:21:42 | 1095ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 20:48:39 | 622ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-23 01:52:18 | 1169ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-17 13:31:58 | 1179ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-31 16:39:03 | 1027ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-23 05:23:49 | 963ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-16 15:39:25 | 4773ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-28 00:33:52 | 1243ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 11:19:40 | 673ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 09:01:01 | 708ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-22 07:40:09 | 527ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-18 08:18:31 | 746ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 12:38:22 shown | 783ms | 2 NS 1 A 3 MX | 🔒 Secure |