DNS delegation of yahoodild.com updated: May 21, 2013 11:07:00 PM
We pick i.root-servers.net, one of the 13 root servers (1), and ask it about yahoodild.com and learn that com is delegated to 13 name servers (2), so we ask g.gtld-servers.net where we learn that yahoodild.com is delegated to five name servers, including ns4.yahoo.com (3), so we ask that one and get the following answer:
The five name servers ns1, ns2, ns3, ns4 and ns5.yahoo.com together
Three quarter of the several hundred of domains that use name server group 1 point to IP group 1 (example: cgi2-yahoo.com, dlsyahoo.com and emailyahoomail.com ). Worth noting is that most of the host names that point to IP group 1 use name server group 1.