Every .dk domain whose A record resolves to 91.221.143.72. 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 |
|---|---|---|
| 91.221.142.0/23 | 142.221.91.in-addr.arpa | ns1.flexdanmark.dk ns2.flexdanmark.dk |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.