datamatrix.dk is a .dk domain served by 2 nameservers (ns1.123hotel.dk, ns2.123hotel.dk). It was registered on 31 August 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.215 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk and 1 more. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.21.41.215 | 3600s | prolinux4.curanet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| 🔶 Autoconfig | 185.21.41.215 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms73824928 |
| openai-domain-verification=dv-xspEIClH3KlG6QpZPShbdFwr |
| v=spf1 ip4:5.103.138.246/32 include:spf.protection.outlook.com include:_spf.centerasecurity.dk -all |
| vpe=a43848b5 |
| Policy | Record (datamatrix.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:5.103.138.246/32 include:spf.protection.outlook.com include:_spf.centerasecurity.dk -all |
| Policy | Record (_dmarc.datamatrix.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:64f0430188e76@dmarc.centerasecurity.com; |
| www CNAME | datamatrix-website.pages.dev (all on pages.dev) |
| www vs bare domain | Different networks datamatrix.dk: 185.21.41.215 (AS48854) (all like this)www.datamatrix.dk: 172.66.44.242 172.66.47.14 2606:4700:310c::ac42:2cf2 2606:4700:310c::ac42:2f0e (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx1-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| SMTP _25._tcp.mx2-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | D4C349E7B72F5CF4A9CEA358F98947C2… |
| SMTP _25._tcp.mx3-dk.centerasecurity.dk | DANE-EE · SPKI · SHA-256 | 56315B43B892E9AEE184919EC6A5821C… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092601 |
| Primary NS (MNAME) | ns1.123hotel.dk |
| Responsible (RNAME) | hostmaster@curanet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-08-31 |
| Expires | 2027-08-31 (318d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-16 02:45:57 | 1692ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-07 12:52:44 | 547ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 11:34:49 | 655ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-27 02:25:27 shown | 1097ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-24 01:30:56 | 1062ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 18:32:38 | 1148ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-25 08:26:04 | 1864ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 01:05:54 | 905ms | 2 NS 1 A 3 MX | 🔒 Secure |