We pick g.root-servers.net, one of the 13 root servers (1), and ask it about uk.tc and learn that tc is delegated to five name servers (2), so we ask asia.zone.vg where we learn that uk.tc is delegated to two name servers, including ns6.idnscan.net (3), so we ask that one and get the following answer:
Uk.tc is a domain controlled by three domain name servers at idnscan.net. Two domain name servers have the same IP number. Both are on different IP networks. Uk.tc has three IP numbers (188.40.70.27, 188.40.117.12, 188.40.70.29). All three of them are on the same IP network.
The four name servers ns1, ns2, ns5 and ns6.idnscan.net together
Half of the about fourty domains that use name server group 3 point to IP group 1 (example: biz.vg, fr.vg and int.vg ). Worth noting is that one of the host names that point to IP group 1 use name server group 3.
The name server ns1.idnscan.net
There are several hundred of domains that use the name server ns1.idnscan.net.