4-it.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 5 March 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.23 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.mailpod16-cph3.g1i.one.com, mx2.mailpod16-cph3.g1i.one.com and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.23 | 3600s | webcluster1.webpod12-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.mailpod16-cph3.g1i.one.com | 5.249.232.33 | mx1.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.mailpod16-cph3.g1i.one.com | 5.249.232.34 | mx2.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.mailpod16-cph3.g1i.one.com | 5.249.232.35 | mx3.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.mailpod16-cph3.g1i.one.com | 5.249.232.36 | mx4.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10a:ba:249b:256b:239a | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 46.30.213.23 2a02:2350:5:10a:ba:249b:256b:239a (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network 4-it.dk: 46.30.213.23 2a02:2350:5:10a:ba:249b:256b:239a (AS51468) www.4-it.dk: 46.30.213.23 2a02:2350:5:10a:ba:249b:256b:239a (AS51468) |
| 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.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 2362DFAC1BB9F66402E0636BDEF478E5… |
| SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 2362DFAC1BB9F66402E0636BDEF478E5… |
| SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 2362DFAC1BB9F66402E0636BDEF478E5… |
| SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 2362DFAC1BB9F66402E0636BDEF478E5… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101605 |
| 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 | 2003-03-05 |
| Expires | 2027-03-31 (164d) |
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 |
|---|---|---|---|
| 2026-10-17 13:52:35 shown | 474ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-08 02:44:57 | 490ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 10:53:28 | 651ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 04:46:11 | 1214ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-06 03:25:46 | 655ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-27 22:32:52 | 909ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-25 03:21:32 | 10351ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-18 17:08:21 | 2446ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 18:49:13 | 1564ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-25 13:13:00 | 824ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-07-01 12:29:29 | 717ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-27 20:26:51 | 1264ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-26 05:21:30 | 586ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-24 09:18:37 | 1171ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 15:11:22 | 924ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-16 13:14:06 | 878ms | 2 NS 1 A 3 MX | 🔒 Secure |