cn20.dk is a .dk domain served by 3 nameservers (ns.nerdonline.dk, ns2.nerdonline.dk, ns3.nerdonline.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 40.104.116.8 |
| TXT Record |
|---|
| MS=ms40118604 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (cn20.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves cn20.dk: no address www.cn20.dk: no address |
| Wildcard | No |
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 1582296904 |
| Primary NS (MNAME) | ns.nerdonline.dk |
| Responsible (RNAME) | hostmaster@nerdonline.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 38400s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 00:52:47 | 1105ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-26 00:22:01 | 2757ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-09 06:40:53 | 1074ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-02 00:38:56 | 1494ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-12 08:40:07 | 7262ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-20 03:24:03 shown | 13640ms | 3 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-21 14:13:55 | 734ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:49:12 | 1660ms | 3 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-16 21:30:03 | 871ms | 3 NS 0 A 1 MX | 🔓 Insecure |