Every .dk domain whose A record resolves to 81.91.1.12. Shared-hosting servers often carry hundreds of sites on one address; this reverse IP lookup shows exactly which .dk names share it. Data comes from our own scanners, which re-resolve every .dk domain in the zone roughly once a week.
| CIDR | Reverse zone | Nameservers |
|---|---|---|
| 81.91.0.0/20 | 0.91.81.in-addr.arpa | dns01.cygate.io dns02.cygate.io |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.