gtkj.dk is a .dk domain served by 3 nameservers (ns4.dns-123.net, ns5.dns-123.net, ns6.dns-123.net). It was registered on 5 March 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.46.101 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. 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 |
|---|---|---|---|---|---|---|---|
| 5.103.46.101 | 7200s | server6101.serverpark.dk | AS44869 | FIBIA P/S | 5.103.0.0/16 | 🇩🇰 Denmark | Holbæk |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 5.103.46.101 |
| 🔶 Autoconfig | 5.103.46.101 |
| TXT Record |
|---|
| protonmail-verification=f09a039dacbb113d9b812e0833f8064b55c33c55 |
| v=spf1 a mx include:_spf.serverpark.dk ~all |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (gtkj.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:_spf.serverpark.dk ~all |
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.gtkj.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 5.103.46.101 (AS44869) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: ~all
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026030501 |
| Primary NS (MNAME) | ns4.dns-123.net |
| Responsible (RNAME) | admin@dns-123.net |
| Refresh | 28800s |
| Retry | 7200s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | INTERNET 123 ApS |
| Registered | 2026-03-05 |
| Expires | 2027-03-04 (128d) |
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).
| Domain | Registrar |
|---|---|
| 543.dk | INTERNET 123 ApS |
| danbytes.dk | INTERNET 123 ApS |
| edbbox.dk | INTERNET 123 ApS |
| joewt.dk | INTERNET 123 ApS |
| koogklud.dk | INTERNET 123 ApS |
| m3nt3k.dk | INTERNET 123 ApS |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 16:00:35 | 755ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-01 00:42:52 | 785ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-28 00:02:59 | 9593ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-25 02:35:34 shown | 1154ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-20 06:50:50 | 2439ms | 3 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 10:00:30 | 1023ms | 3 NS 1 A 2 MX | 🔒 Secure |