mastersystem.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.131 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.mailpod16-cph3.g1i.one.com, mx2.mailpod16-cph3.g1i.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.111.240.131 | 3600s | webcluster4.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.mailpod16-cph3.g1i.one.com | 5.249.232.33 | mx1.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.mailpod16-cph3.g1i.one.com | 5.249.232.34 | mx2.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.mailpod16-cph3.g1i.one.com | 5.249.232.35 | mx3.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.mailpod16-cph3.g1i.one.com | 5.249.232.36 | mx4.mailpod16-cph3.g1i.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:18:8f6f:17fc:7565 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 77.111.240.131 2a02:2350:5:102:18:8f6f:17fc:7565 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network mastersystem.dk: 77.111.240.131 2a02:2350:5:102:18:8f6f:17fc:7565 (AS51468) www.mastersystem.dk: 77.111.240.131 2a02:2350:5:102:18:8f6f:17fc:7565 (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.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 24689A1B29BE70163B6DCF262497B6EC… |
| SMTP _25._tcp.mx2.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 24689A1B29BE70163B6DCF262497B6EC… |
| SMTP _25._tcp.mx3.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 24689A1B29BE70163B6DCF262497B6EC… |
| SMTP _25._tcp.mx4.mailpod16-cph3.g1i.one.com | DANE-EE · SPKI · SHA-256 | 24689A1B29BE70163B6DCF262497B6EC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082205 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 15:25:02 | 758ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-27 19:01:50 | 668ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-27 03:10:08 | 741ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-21 14:31:38 | 596ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-02 17:55:53 | 713ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 23:45:09 | 670ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-23 17:46:55 shown | 2849ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-21 15:09:19 | 9322ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-19 13:41:35 | 4935ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-02 21:10:12 | 2612ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 12:20:22 | 657ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 01:26:34 | 2549ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 05:18:23 | 774ms | 2 NS 1 A 4 MX | 🔒 Secure |