DNS delegation of www.google.cz updated: Jun 18, 2013 7:47:25 PM
Delegation
step
query
auth
servers
1
www.google.cz.
.
(h,m,i,l,k,e,c,d,j,a,g,b,f).root-servers.net.
2
www.google.cz.
cz.
(a,f,d,b,c).ns.nic.cz.
3
www.google.cz.
google.cz.
(ns2,ns1,ns3,ns4).google.com.
We pick h.root-servers.net, one of the 13 root servers (1), and ask it about www.google.cz and learn that cz is delegated to five name servers (2), so we ask a.ns.nic.cz where we learn that google.cz is delegated to four name servers, including ns2.google.com (3), so we ask that one and get the following answer:
Every fifth of the several hundred of host names that point to the IP number 74.125.239.127 use name server group 1 (example: google.com.et and google.com.bh ).
