DNS delegation of www.fbplugin.com updated: May 24, 2013 6:25:00 AM
Delegation
step
query
auth
servers
1
www.fbplugin.com.
.
(a,c,l,h,m,e,i,f,g,k,d,b,j).root-servers.net.
2
www.fbplugin.com.
com.
(i,l,k,g,e,h,m,b,c,j,f,d,a).gtld-servers.net.
3
www.fbplugin.com.
fbplugin.com.
(b,a).ns.facebook.com.
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about www.fbplugin.com and learn that com is delegated to 13 name servers (2), so we ask i.gtld-servers.net where we learn that fbplugin.com is delegated to two name servers, including b.ns.facebook.com (3), so we ask that one and get the following answer: