DNS delegation of previewdns.com updated: Jun 19, 2013 10:19:07 PM
Delegation
step
query
auth
servers
1
previewdns.com.
.
(m,j,a,k,l,g,i,h,c,e,f,d,b).root-servers.net.
2
previewdns.com.
com.
(b,h,m,l,c,d,f,a,i,j,g,e,k).gtld-servers.net.
3
previewdns.com.
previewdns.com.
(ans02,ans01).domaincontrol.com.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about previewdns.com and learn that com is delegated to 13 name servers (2), so we ask b.gtld-servers.net where we learn that previewdns.com is delegated to two name servers, including ans02.domaincontrol.com (3), so we ask that one and get the following answer: