DNS delegation of 128.63 updated: Jun 18, 2013 11:05:43 PM
Delegation
step
query
auth
servers
1
63.128.in-addr.arpa.
.
(c,e,b,l,h,d,f,m,i,g,a,j,k).root-servers.net.
2
63.128.in-addr.arpa.
in-addr.arpa.
(e,f,b,a,c,d).in-addr-servers.arpa.
3
63.128.in-addr.arpa.
128.in-addr.arpa.
(z,w,v,y,r,t,x,u).arin.net.
4
63.128.in-addr.arpa.
63.128.in-addr.arpa.
(ns01,ns02,ns03).army.mil.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about 63.128.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 128.in-addr.arpa is delegated to eight name servers, including z.arin.net (3), so we ask that one and learn that 63.128.in-addr.arpa is delegated to three name servers (4), so we ask ns01.army.mil and get the following answer: