opk.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 77.111.241.80 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod14-cph3.one.com, mx2.pub.mailpod14-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 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 |
|---|---|---|---|---|---|---|---|
| 77.111.241.80 | 3600s | webcluster1.wordpresspod2-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.pub.mailpod14-cph3.one.com | 185.10.9.212 | mx1.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod14-cph3.one.com | 185.10.9.213 | mx2.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod14-cph3.one.com | 185.10.9.214 | mx3.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod14-cph3.one.com | 185.10.9.215 | mx4.pub.mailpod14-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.111.241.80 |
| 🔶 Autoconfig | 77.111.241.80 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:104:87:9325:25ab:8989 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 77.111.241.80 2a02:2350:5:104:87:9325:25ab:8989 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network opk.dk: 77.111.241.80 2a02:2350:5:104:87:9325:25ab:8989 (AS51468) www.opk.dk: 77.111.241.80 2a02:2350:5:104:87:9325:25ab:8989 (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx2.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx3.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| SMTP _25._tcp.mx4.pub.mailpod14-cph3.one.com | DANE-EE · SPKI · SHA-256 | 42A27444ECBF3C0485409E27E2A6AB15… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026090205 |
| 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 19:52:42 shown | 714ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-29 15:01:53 | 1467ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-05 02:37:08 | 821ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-25 01:03:33 | 2189ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-21 23:10:38 | 2576ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-14 04:15:31 | 8970ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-06 10:38:02 | 970ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-06 17:38:34 | 1579ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-04 21:58:23 | 1952ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 19:35:18 | 3700ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-21 18:12:47 | 724ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-18 00:29:55 | 2993ms | 2 NS 1 A 4 MX | 🔒 Secure |