mailtune.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 February 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mailgw.sdcloud.dk, mx.c5x.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 3600s | mailgw.sdcloud.dk | 135.125.131.104 | vps-da909c67.vps.ovh.net | AS16276 OVH SAS |
| 99 | 3600s | mx.c5x.dk | 188.120.78.171 | — | AS31027 GlobalConnect A/S |
| TXT Record |
|---|
| v=spf1 mx -all |
| Policy | Record (mailtune.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx -all |
| Policy | Record (_dmarc.mailtune.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; |
| www | 46.30.211.38 (AS51468) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101201 |
| 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 | 2011-02-04 |
| Expires | 2027-02-28 (134d) |
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).
| Domain | Registrar |
|---|---|
| c5experten.dk | Punktum dk A/S (direct) |
| elkaerparken.dk | Punktum dk A/S (direct) |
| sdcloud.dk | Punktum dk A/S (direct) |
| uninest.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 04:36:34 shown | 600ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-10-12 03:16:33 | 2141ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-23 16:55:30 | 1430ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-09-16 15:59:10 | 568ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-08-13 15:41:20 | 6889ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-26 21:59:07 | 24888ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-07-02 09:59:52 | 1410ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-19 22:53:58 | 1881ms | 2 NS 0 A 2 MX | 🔒 Secure |
| 2026-06-17 23:47:16 | 850ms | 2 NS 0 A 2 MX | 🔒 Secure |