cau.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 July 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.199 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 185.21.40.199 | 43200s | linux14.curanet.dk | AS48854 | team.blue Denmark A/S | 185.21.40.0/22 | 🇩🇰 Denmark | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.136 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms45106207 |
| v=spf1 ip4:80.160.69.242 ip4:93.191.155.217 include:spf.protection.outlook.com include:spf.mailanyone.net include:userinclude.dme3ds1.com -all |
| Policy | Record (cau.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:80.160.69.242 ip4:93.191.155.217 include:spf.protection.outlook.com include:spf.mailanyone.net include:userinclude.dme3ds1.com -all |
| www | 185.21.40.199 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx1.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx2.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx3.mailanyone.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 1AAAC405385DEB66C25E43D629569F6C… |
| SMTP _25._tcp.dk.mx4.mx25.net | DANE-EE · Full cert · SHA-256 | 443DFE296DAC92DD311766BAD0B04CC7… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101201 |
| 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 | Punktum dk A/S (direct) |
| Registered | 1998-07-13 |
| Expires | 2027-09-30 (348d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 19:29:10 shown | 708ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-29 22:14:48 | 725ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-25 23:59:45 | 1053ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-14 23:17:06 | 1071ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-12 19:04:47 | 1013ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-31 11:10:26 | 1078ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-13 00:09:02 | 5716ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-28 12:22:14 | 3128ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-19 01:37:31 | 9663ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-15 00:45:08 | 1413ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-27 05:32:14 | 925ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 08:06:11 | 684ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 23:04:28 | 659ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 19:46:25 | 2916ms | 2 NS 1 A 4 MX | 🔒 Secure |