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. Its website address 139.177.177.15 is hosted by Akamai Connected Cloud (AS63949) in Germany. 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 our latest 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 |
|---|---|---|---|---|---|---|---|
| 139.177.177.15 | 600s | linode2.netmaster.dk | AS63949 | Akamai Connected Cloud | 139.177.176.0/20 | 🇩🇪 Germany | Frankfurt am Main |
| 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 | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100501 |
| 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 shown | 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 | 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 |