DNS delegation of vip.sp1.yahoo.com updated: Jun 19, 2013 5:28:05 AM
Delegation
step
query
auth
servers
1
vip.sp1.yahoo.com.
.
(f,b,a,c,j,h,l,e,g,m,d,i,k).root-servers.net.
2
vip.sp1.yahoo.com.
com.
(b,j,g,m,e,c,h,a,d,f,k,i,l).gtld-servers.net.
3
vip.sp1.yahoo.com.
yahoo.com.
(ns1,ns2,ns3,ns4,ns5).yahoo.com.
We pick f.root-servers.net, one of the 13 root servers (1), and ask it about vip.sp1.yahoo.com and learn that com is delegated to 13 name servers (2), so we ask b.gtld-servers.net where we learn that yahoo.com is delegated to five name servers, including ns1.yahoo.com (3), so we ask that one and get the following answer: