DNS delegation of 64.123 updated: Jun 19, 2013 2:13:50 PM
Delegation
step
query
auth
servers
1
123.64.in-addr.arpa.
.
(l,d,g,j,a,i,f,b,c,k,m,h,e).root-servers.net.
2
123.64.in-addr.arpa.
in-addr.arpa.
(e,f,c,b,a,d).in-addr-servers.arpa.
3
123.64.in-addr.arpa.
64.in-addr.arpa.
(w,y,r,z,t,v,u,x).arin.net.
4
123.64.in-addr.arpa.
123.64.in-addr.arpa.
(ns1,ns2).swbell.net.
We pick l.root-servers.net, one of the 13 root servers (1), and ask it about 123.64.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask e.in-addr-servers.arpa where we learn that 64.in-addr.arpa is delegated to eight name servers, including w.arin.net (3), so we ask that one and learn that 123.64.in-addr.arpa is delegated to two name servers (4), so we ask ns1.swbell.net and get the following answer: