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 87.61.101.71 is hosted by TDC Holding A/S (AS3292) 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 |
|---|---|---|---|---|---|---|---|
| 87.61.101.71 | 43200s | 0x573d6547.static.cust.fastspeed.dk | AS3292 | TDC Holding A/S | 87.61.0.0/17 | 🇩🇰 Denmark | Aarhus |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mailstar.dk | 87.61.101.71 | 0x573d6547.static.cust.fastspeed.dk | AS3292 TDC Holding A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 87.61.101.71 |
| 🔶 Autoconfig | 87.61.101.71 |
| TXT Record |
|---|
| v=spf1 ip6:2a02:2190::/29 mx a:smtp1.bolignet.dk a:smtp2.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:87.62.120.205 ip4:87.61.101.71 ip4:100.72.227.106 ptr:mailstar.dk ip4:79.142.224.26 ~all |
| Policy | Record (mailstar.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip6:2a02:2190::/29 mx a:smtp1.bolignet.dk a:smtp2.bolignet.dk a:mail.bolignet.dk a:smtp.3.dk ip4:87.62.120.205 ip4:87.61.101.71 ip4:100.72.227.106 ptr:mailstar.dk ip4:79.142.224.26 ~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: 6/10 · policy: ~all
| 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 | Utd_YgvWonIAJpIDB456JDixJCHC6jDTWoq0Tc8PQsE |
| TXT | 2cd16211-8059-40aa-8a13-e3d8ede80491.auth.acme-dns.io | W7Ba8GF7k4yhnI5eQmeQRgU77sEuG1V8xd4cxK9htj8 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026081101 |
| 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 | 2421ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-12 09:55:09 shown | 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 |