4th.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 September 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.47.247.18 is hosted by One.com A/S (AS51468). Mail is handled by mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.one.com and 2 more. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 195.47.247.18 | 3600s | one.com.webforward.g1i.one | AS51468 | One.com A/S | 195.47.247.0/24 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.mailpod15-cph3.g1i.one.com | 104.37.35.36 | mx1.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.mailpod15-cph3.g1i.one.com | 104.37.35.37 | mx2.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.mailpod15-cph3.g1i.one.com | 104.37.35.38 | mx3.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.mailpod15-cph3.g1i.one.com | 104.37.35.39 | mx4.mailpod15-cph3.g1i.one.com | AS51468 One.com A/S |
| www | 195.47.247.18 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | E54A7262DC6E3E0F06227A22B71D01DC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092301 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2002-09-04 |
| Expires | 2027-09-30 (346d) |
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 |
|---|---|---|---|
| 2026-10-16 22:11:00 | 726ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-15 19:41:55 | 483ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-14 19:11:57 | 781ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-29 22:14:12 shown | 583ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 15:54:51 | 646ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-17 13:06:18 | 622ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-13 10:23:18 | 791ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-04 16:33:59 | 654ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-17 11:35:40 | 3812ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-16 10:01:50 | 904ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-14 22:21:04 | 980ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-15 10:19:45 | 854ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-29 16:59:21 | 726ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 02:45:46 | 735ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 06:09:10 | 2537ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 15:19:46 | 2454ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-19 05:58:22 | 969ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 10:13:43 | 4654ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 12:50:54 | 2311ms | 2 NS 1 A 4 MX | 🔒 Secure |