DNS delegation of wwwgoogle.co updated: May 23, 2013 11:42:42 AM
Delegation
step
query
auth
servers
1
wwwgoogle.co.
.
(k,d,a,l,h,m,c,f,b,e,j,g,i).root-servers.net.
2
wwwgoogle.co.
co.
(ns3,ns1,ns4,ns5,ns6,ns2).cctld.co.
3
wwwgoogle.co.
wwwgoogle.co.
(ns4,ns1,ns3,ns2).google.com.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about wwwgoogle.co and learn that co is delegated to six name servers (2), so we ask ns3.cctld.co where we learn that wwwgoogle.co is delegated to four name servers, including ns4.google.com (3), so we ask that one and get the following answer: