netmaster.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 January 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by linode2.netmaster.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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | linode2.netmaster.dk | 139.177.177.15 | linode2.netmaster.dk | AS63949 Akamai Connected Cloud |
| TXT Record |
|---|
| google-site-verification=YP0zGf6zlBrxGYLjDW9vnXdExreTRsjIiKXsz9Kr5_Q |
| v=spf1 ip4:139.177.177.15 ip6:2a01:7e01::2000:16ff:fe34:836c ~all |
| Policy | Record (netmaster.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:139.177.177.15 ip6:2a01:7e01::2000:16ff:fe34:836c ~all |
| Policy | Record (_dmarc.netmaster.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc@netmaster.dk; ruf=mailto:dmarc@netmaster.dk; sp=none; aspf=r; adkim=r; pct=100; |
| www | 139.177.177.15 (AS63949) (address records, no CNAME) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| — | 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| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✗ Not found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026090301 |
| 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 | 2004-01-03 |
| 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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 23:23:14 | 534ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 22:49:43 | 522ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 02:21:42 | 695ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-17 08:16:59 shown | 9433ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-07 14:05:43 | 663ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-03 19:22:16 | 815ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 09:34:56 | 637ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 08:01:18 | 1021ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-06 11:36:20 | 654ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-01 12:16:53 | 529ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 18:57:13 | 848ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-19 01:26:09 | 648ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 20:22:47 | 760ms | 2 NS 1 A 1 MX | 🔒 Secure |