mailexpert.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 January 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.164.164.82 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mailexpert.dk, backup-mx.post.tele.dk. 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 |
|---|---|---|---|---|---|---|---|
| 93.164.164.82 | — | binaryshelter.com | AS3292 | TDC Holding A/S | 93.164.160.0/19 | 🇩🇰 Denmark | Farsø |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mailexpert.dk | 93.164.164.82 | binaryshelter.com | AS3292 TDC Holding A/S |
| 20 | — | backup-mx.post.tele.dk | — | — | — |
| www CNAME | mailexpert.dk (all on mailexpert.dk) → 93.164.164.82 (AS3292) |
| 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 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026040401 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2004-01-07 |
| Expires | 2027-01-31 (106d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 23:10:30 | 2357ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-02 08:35:07 | 406ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 18:40:24 | 747ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 18:18:35 | 476ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 07:48:41 | 511ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-05 17:19:36 | 2468ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-01 00:45:39 | 773ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-18 01:19:29 | 4669ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 16:57:09 | 640ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 23:37:57 shown | 1010ms | 2 NS 1 A 2 MX | 🔒 Secure |