mailstar.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 November 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.248.139.139 is hosted by Netnoerden ApS (AS216275) in Denmark. Mail is handled by mailstar.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 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 |
|---|---|---|---|---|---|---|---|
| 80.248.139.139 | 43200s | mail.mandrupsen.dk | AS216275 | Netnoerden ApS | 80.248.138.0/23 | 🇩🇰 Denmark | Søborg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mailstar.dk | 80.248.139.139 | mail.mandrupsen.dk | AS216275 Netnoerden ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 80.248.139.139 |
| 🔶 Autoconfig | 80.248.139.139 |
| TXT Record |
|---|
| v=spf1 ip4:80.248.139.139 ip6:2a13:e744:aeec::/48 -all |
| Policy | Record (mailstar.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:80.248.139.139 ip6:2a13:e744:aeec::/48 -all |
| Policy | Record (_dmarc.mailstar.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@vistech.dk; ruf=mailto:dmarc@vistech.dk |
| www | 80.248.139.139 (AS216275) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 0/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.mailstar.dk | 2cd16211-8059-40aa-8a13-e3d8ede80491.auth.acme-dns.io |
| TXT | 2cd16211-8059-40aa-8a13-e3d8ede80491.auth.acme-dns.io | W7Ba8GF7k4yhnI5eQmeQRgU77sEuG1V8xd4cxK9htj8 |
| TXT | 2cd16211-8059-40aa-8a13-e3d8ede80491.auth.acme-dns.io | Zt9hqy3pli9_hyHrY3ZB2zFLQVW_9_dci9AdQUXeIw0 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082710 |
| 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 | 2004-11-03 |
| Expires | 2035-11-30 (3323d) |
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 |
|---|---|---|---|
| 2026-10-21 16:33:42 | 985ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-12 02:24:57 | 510ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 04:57:32 | 722ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-12 05:40:25 | 876ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 13:07:30 shown | 2421ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 09:55:09 | 2879ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-17 20:13:09 | 1044ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-12 20:53:38 | 1211ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 14:35:28 | 3374ms | 2 NS 1 A 1 MX | 🔒 Secure |