DNS delegation of amoozesh.azu.ac.ir updated: February 9, 2012 15:20
Delegation
step
query
auth
servers
1
amoozesh.azu.ac.ir.
.
(a,b,i,e,g,l,c,f,m,j,h,d,k).root-servers.net.
2
amoozesh.azu.ac.ir.
ir.
auth02.ns.uu.net. ns5.univie.ac.at. ns1.nic.ir.
3
amoozesh.azu.ac.ir.
ac.ir.
a.nic.ir. auth51.ns.uu.net. ns5.univie.ac.at.
4
amoozesh.azu.ac.ir.
azu.ac.ir.
(ns1).azu.ac.ir.
We pick a.root-servers.net, one of the 13 root servers (1), and ask it about amoozesh.azu.ac.ir and learn that ir is delegated to three name servers (2), so we ask auth02.ns.uu.net where we learn that ac.ir is delegated to three name servers, including a.nic.ir (3), so we ask that one and learn that azu.ac.ir is delegated to one name server (4), so we ask ns1.azu.ac.ir and get the following answer: