dotblue.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 7 June 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.182 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by dotblue-dk.i-v1.mx.microsoft. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 77.111.240.182 | — | webcluster55.webpod11-cph3.one.com | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:80b1:6b9:bd03:3f5f | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| MS=ms34292904 |
| v=spf1 include:spf.protection.outlook.com include:_spf.simplero.com ~all |
| Policy | Record (dotblue.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com include:_spf.simplero.com ~all |
| Policy | Record (_dmarc.dotblue.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:web@dotblue.dk; ruf=mailto:web@dotblue.dk |
| www | 77.111.240.182 2a02:2350:5:102:80b1:6b9:bd03:3f5f (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network dotblue.dk: 77.111.240.182 2a02:2350:5:102:80b1:6b9:bd03:3f5f (AS51468) www.dotblue.dk: 77.111.240.182 2a02:2350:5:102:80b1:6b9:bd03:3f5f (AS51468) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 5/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 5F88694615E4C61686E106B84C3338C6… |
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | C495D9E40F7E625BE22F83CC64305182… |
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 38D895F5105BC2545822C17A2444F4B0… |
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 133086C7B822371A4A3304F1661A7880… |
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | 6EBFF927297A5B3AAF5EAE672252C36A… |
| SMTP _25._tcp.dotblue-dk.i-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | A6C267923B26A4A9617EDA73D8DB4FBC… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026060402 |
| 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 | 2022-06-07 |
| Expires | 2029-06-06 (962d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 21:16:41 | 582ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 21:10:24 | 672ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-30 04:56:39 | 725ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 17:59:25 | 698ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 11:26:48 | 9168ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-06 13:18:23 | 1557ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 19:25:12 | 664ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 06:42:32 | 946ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 04:22:32 | 857ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 04:20:37 shown | 2793ms | 2 NS 1 A 1 MX | 🔒 Secure |