DNS delegation of mail.irisl.net.ir updated: May 23, 2013 5:50:06 PM
Delegation
step
query
auth
servers
1
mail.irisl.net.ir.
.
(b,g,i,l,c,a,h,j,f,d,e,k,m).root-servers.net.
2
mail.irisl.net.ir.
ir.
a.nic.ir. ns.irnic.ir. ns5.univie.ac.at.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about mail.irisl.net.ir and learn that ir is delegated to three name servers (2), so we ask a.nic.ir and get the following answer: