DNS delegation of facebook.ch updated: May 23, 2013 10:30:13 PM
Delegation
step
query
auth
servers
1
facebook.ch.
.
(l,d,m,e,a,b,k,f,h,i,g,c,j).root-servers.net.
2
facebook.ch.
ch.
(h,c,d,e,b,a,f).nic.ch.
3
facebook.ch.
facebook.ch.
(a,b).ns.facebook.com.
We pick l.root-servers.net, one of the 13 root servers (1), and ask it about facebook.ch and learn that ch is delegated to seven name servers (2), so we ask h.nic.ch where we learn that facebook.ch is delegated to two name servers, including a.ns.facebook.com (3), so we ask that one and get the following answer: