Every .dk domain whose A record resolves to 156.154.110.4. 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 |
|---|---|---|
| 156.154.110.0/23 | 110.154.156.in-addr.arpa | pdns1.ultradns.net pdns2.ultradns.net pdns3.ultradns.org pdns4.ultradns.org pdns5.ultradns.info pdns6.ultradns.co.uk |
The zone shown is the most specific level that answers an NS query, so a classless delegation may report its parent.