Every .dk domain whose A record resolves to 217.79.221.131. 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 |
|---|---|---|
| 217.79.208.0/20 | 208.79.217.in-addr.arpa | edns116.ultradns.biz edns116.ultradns.com edns116.ultradns.net edns116.ultradns.org |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.