blueit.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx3.blueit.dk. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.195.172.36 | — | blueit.dk | AS42686 | — | — | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx3.blueit.dk | 185.195.172.25 | mx3.blueit.dk | AS42686 Blue IT Aps |
| TXT Record |
|---|
| google-site-verification=Vlh9szoi4kJCkCuj2sRM6yxiXF51-Mepctt1IBh0EPY |
| google-site-verification=WXkWskkth700ID1y8OVr51AW0nIOwpZv5kxYKn6bCv4 |
| MS=ms59669693 |
| v=spf1 mx mx:blueit.dk -all |
| Policy | Record (blueit.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx mx:blueit.dk -all |
| Policy | Record (_dmarc.blueit.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:postmaster@blueit.dk; ruf=mailto:authfail@blueit.dk |
| www CNAME | blueit.dk (all on blueit.dk) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~1024 bit below 2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052704 |
| 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 | Key-Systems GmbH |
| Registered | 2016-11-03 |
| Expires | 2029-11-30 (1139d) |
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 |
|---|---|
| blueboks.dk | Key-Systems GmbH |
| bluefi.dk | Key-Systems GmbH |
| bluehosting.dk | Key-Systems GmbH |
| bluephone.dk | Key-Systems GmbH |
| farmerhosting.dk | Key-Systems GmbH |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 07:39:08 | 521ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-24 01:15:55 | 545ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-12 17:17:47 | 1092ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-21 14:01:55 | 4594ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-04 22:44:31 | 2325ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-03 13:27:54 | 1185ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-25 06:15:16 | 725ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-15 17:10:49 | 8654ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 15:31:46 | 533ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 11:57:24 | 872ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:04:58 shown | 476ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:04:08 | 1998ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:01:39 | 1547ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-16 15:00:04 | 1918ms | 2 NS 1 A 1 MX | 🔒 Secure |