opti-k.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 4 October 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.16 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod12-cph3.one.com, mx2.pub.mailpod12-cph3.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 |
|---|---|---|---|---|---|---|---|
| 46.30.213.16 | 3600s | webcluster1.webpod12-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod12-cph3.one.com | 104.37.34.246 | mx1.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod12-cph3.one.com | 104.37.34.247 | mx2.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod12-cph3.one.com | 104.37.34.248 | mx3.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod12-cph3.one.com | 104.37.34.249 | mx4.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:10a:87:bde6:684e:9923 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| google-site-verification=BmgQU-l5nkAlP3MmIcSmjI5sRtZ2pO1BogMUQyb2RYE |
| pinterest-site-verification=b6aab27e05c165ac96ed157b1769f1e1 |
| www | 46.30.213.16 2a02:2350:5:10a:87:bde6:684e:9923 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network opti-k.dk: 46.30.213.16 2a02:2350:5:10a:87:bde6:684e:9923 (AS51468) www.opti-k.dk: 46.30.213.16 2a02:2350:5:10a:87:bde6:684e:9923 (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.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 2CDDC5D748A3C02AC19FF7BC33AA01A5… |
| SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 3E81C76D10E1A717F28178710EADCAA8… |
| SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 3E81C76D10E1A717F28178710EADCAA8… |
| SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 2CDDC5D748A3C02AC19FF7BC33AA01A5… |
| SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 3E81C76D10E1A717F28178710EADCAA8… |
| SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 2CDDC5D748A3C02AC19FF7BC33AA01A5… |
| SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 3E81C76D10E1A717F28178710EADCAA8… |
| SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | 2CDDC5D748A3C02AC19FF7BC33AA01A5… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026090101 |
| 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 | ONE.COM A/S |
| Registered | 2013-10-04 |
| Expires | 2026-10-31 (8d) |
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 |
|---|---|---|---|
| 2026-10-20 02:27:16 | 784ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-04 05:33:00 | 488ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-01 04:20:02 | 897ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-27 02:20:33 | 649ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-22 12:08:43 | 901ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-15 11:20:22 | 964ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-08 09:53:00 shown | 855ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-18 10:10:23 | 4972ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 13:54:40 | 4936ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-17 17:12:34 | 873ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-16 13:31:13 | 882ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-29 13:41:04 | 735ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-24 10:13:37 | 720ms | 2 NS 1 A 4 MX | ⚠️ Bogus |
| 2026-06-23 14:13:24 | 738ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 07:11:58 | 913ms | 2 NS 1 A 4 MX | 🔒 Secure |