tdu.dk is a .dk domain served by 2 nameservers (ns1auth.tdu.dk, ns2auth.tdu.dk). It was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1auth.tdu.dk | 80.63.62.13 | ns1auth.tdu.dk | AS3292 TDC Holding A/S |
| ns2auth.tdu.dk | 80.63.62.22 | ns2auth.tdu.dk | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| DNS admin: Kristen Nielsen, Teledanmark udvikling, krn@tdu.dk, tlf +45 66 630735 / +45 40 466221 |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves tdu.dk: no address www.tdu.dk: no address |
| Wildcard | No |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2024022000 |
| Primary NS (MNAME) | ns1auth.tdu.dk |
| Responsible (RNAME) | hostmaster@tdu.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 86400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 19:00:18 shown | 9012ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-09-07 03:10:44 | 9685ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-07-22 03:49:19 | 5094ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-17 12:18:18 | 701ms | 2 NS 0 A 0 MX | 🔓 Insecure |