Every .dk domain whose A record resolves to 178.21.248.223. 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 |
|---|---|---|
| 178.21.248.0/21 | 248.21.178.in-addr.arpa | ns1.uni-tel.dk ns2.uni-tel.dk ns3.uni-tel.dk ns4.uni-tel.dk |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.