2tum.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 July 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.139 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.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 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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.139 | — | webcluster1.webpod14-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10c:58:e698:21e1:585 | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 46.30.213.148 2a02:2350:5:10c:a1:f1ea:d216:735a (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network 2tum.dk: 46.30.213.148 2a02:2350:5:10c:a1:f1ea:d216:735a (AS51468) www.2tum.dk: 46.30.213.148 2a02:2350:5:10c:a1:f1ea:d216:735a (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.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061305 |
| 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 | 2017-07-04 |
| Expires | 2027-07-31 (286d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 00:53:08 | 2252ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-27 17:00:58 | 972ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 15:58:30 | 2494ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-25 21:47:19 | 721ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-13 08:10:05 | 3417ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 12:43:51 | 794ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 08:10:28 | 967ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 12:38:17 shown | 1037ms | 2 NS 1 A 4 MX | 🔒 Secure |