We pick c.root-servers.net, one of the 13 root servers (1), and ask it about dns.ae and learn that ae is delegated to six name servers (2), so we ask sns-pb.isc.org where we learn that dns.ae is delegated to four name servers, including dxbans2.ecompany.ae (3), so we ask that one and get the following answer:
The two IP numbers 22.214.171.124 and 126.96.36.199 together
All of the three host names that point to IP group 1 use the four name servers auhans1, auhans2, dxbans1 and dxbans2.ecompany.ae together, hereafter referred to as "name server group 1". Worth noting is that three of the domains that use name server group 1 point to IP group 1.
The four name servers auhans1, auhans2, dxbans1 and dxbans2.ecompany.ae together
There are several thousand of domains that use name server group 1.