DNS delegation of yahoodild.com updated: May 21, 2013 11:07:00 PM
Delegation
step
query
auth
servers
1
yahoodild.com.
.
(i,b,a,l,m,h,e,f,g,c,d,j,k).root-servers.net.
2
yahoodild.com.
com.
(g,f,k,h,m,c,e,j,d,a,l,b,i).gtld-servers.net.
3
yahoodild.com.
yahoodild.com.
(ns4,ns1,ns5,ns2,ns3).yahoo.com.
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.