DNS delegation of com.com updated: Jun 19, 2013 11:07:06 AM
Delegation
step
query
auth
servers
1
com.com.
.
(j,a,e,b,h,f,m,g,c,k,d,l,i).root-servers.net.
2
com.com.
com.
(m,b,d,i,a,c,f,h,l,j,g,e,k).gtld-servers.net.
3
com.com.
com.com.
(ns2,ns3,ns).cnet.com.
We pick j.root-servers.net, one of the 13 root servers (1), and ask it about com.com and learn that com is delegated to 13 name servers (2), so we ask m.gtld-servers.net where we learn that com.com is delegated to three name servers, including ns2.cnet.com (3), so we ask that one and get the following answer:
There are several hundred of host names that point only to the IP number 64.30.224.118.
A third of those use name server group 1 (example: gmaespote.com, cnet-asia.com and bcity.com ). Worth noting is that a third of the domains that use name server group 1 point only to the IP number 64.30.224.118.
Four percent of them use mail server group 1.
The three name servers ns, ns2 and ns3.cnet.com together
There are several hundred of domains that use name server group 1.