o2sn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 2 October 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.241.106 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 77.111.241.106 | — | webcluster2.wordpresspod2-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 77.111.241.106 |
| 🔶 Autoconfig | 77.111.241.106 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:104:8055:847:7705:ad79 | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (o2sn.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.o2sn.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; |
| www | 77.111.241.106 2a02:2350:5:104:8055:847:7705:ad79 (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network o2sn.dk: 77.111.241.106 2a02:2350:5:104:8055:847:7705:ad79 (AS51468) www.o2sn.dk: 77.111.241.106 2a02:2350:5:104:8055:847:7705:ad79 (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061501 |
| 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 | 1997-10-02 |
| Expires | 2026-12-31 (74d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-25 00:36:00 | 740ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-19 23:30:31 | 646ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-30 23:33:43 | 2346ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 00:54:12 | 643ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-30 16:19:15 | 701ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 22:48:47 shown | 1015ms | 2 NS 1 A 4 MX | 🔒 Secure |