DNS delegation of sex.wap.com updated: Jun 19, 2013 10:17:14 AM
Delegation
step
query
auth
servers
1
sex.wap.com.
.
(c,a,h,e,k,l,d,g,b,m,j,f,i).root-servers.net.
2
sex.wap.com.
com.
(k,j,f,a,g,i,c,m,d,b,l,e,h).gtld-servers.net.
3
sex.wap.com.
wap.com.
(udns1,udns2).ultradns.net.
4
wap.com.
wap.com.
(udns1,udns2).ultradns.net.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about sex.wap.com and learn that com is delegated to 13 name servers (2), so we ask k.gtld-servers.net where we learn that wap.com is delegated to two name servers, including udns1.ultradns.net (3), so we ask that one where we see a CNAME from sex.wap.com to wap.com, so we have to start all over again. We already know that udns1.ultradns.net is authoritative for wap.com (4) and ask it about wap.com and get the following answer: