21o.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.47.14.199 is hosted by Hetzner Online GmbH (AS24940) in Germany. The zone is DNSSEC-signed and validates, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.scannet2.dk | — | — | — |
| ns2.scannet2.dk | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 78.47.14.199 | — | static.199.14.47.78.clients.your-server.de | AS24940 | Hetzner Online GmbH | 78.46.0.0/15 | 🇩🇪 Germany | — |
| TXT Record |
|---|
| d365mktkey=FfxxgZvAnKOLhWOdFAdq6B4ogYEQxn56BqFuVxrYhPEx |
| d365mktkey=VtloxgDJmTagvQ82esYWEBxAwzImcdElzTAeiA8zyWAx |
| www CNAME | 21o.dk (all on 21o.dk) |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2025031202 |
| Primary NS (MNAME) | ns.scannet2.dk |
| Responsible (RNAME) | hostmaster@scannet.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 00:06:11 | 406ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-09-01 12:49:07 | 529ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-25 14:08:21 | 2311ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 13:25:39 | 6005ms | 2 NS 1 A 0 MX | 🔒 Secure |
| 2026-06-16 13:12:36 shown | 900ms | 2 NS 1 A 0 MX | 🔒 Secure |