DNS delegation of eu.s9b1.psmtp.com updated: Jun 19, 2013 11:48:16 PM
Delegation
step
query
auth
servers
1
eu.s9b1.psmtp.com.
.
(g,k,c,h,a,l,m,i,f,e,d,j,b).root-servers.net.
2
eu.s9b1.psmtp.com.
com.
(l,i,h,m,d,k,c,a,g,b,f,e,j).gtld-servers.net.
3
eu.s9b1.psmtp.com.
psmtp.com.
(ns1,ns2,ns3,ns4).google.com.
We pick g.root-servers.net, one of the 13 root servers (1), and ask it about eu.s9b1.psmtp.com and learn that com is delegated to 13 name servers (2), so we ask l.gtld-servers.net where we learn that psmtp.com is delegated to four name servers, including ns1.google.com (3), so we ask that one and get the following answer:
