DNS delegation of aspmx.l.googl.com updated: May 22, 2013 3:01:07 PM
Delegation
step
query
auth
servers
1
aspmx.l.googl.com.
.
(b,m,l,k,d,e,j,h,f,c,g,a,i).root-servers.net.
2
aspmx.l.googl.com.
com.
(k,g,m,c,e,b,a,l,h,i,j,f,d).gtld-servers.net.
3
aspmx.l.googl.com.
googl.com.
(ns1,ns2,ns3,ns4).google.com.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about aspmx.l.googl.com and learn that com is delegated to 13 name servers (2), so we ask k.gtld-servers.net where we learn that googl.com is delegated to four name servers, including ns1.google.com (3), so we ask that one and get the following answer:
