DNS delegation of 192.12 updated: Jun 20, 2013 11:53:47 AM
Delegation
step
query
auth
servers
1
12.192.in-addr.arpa.
.
(b,k,l,h,g,a,j,d,e,m,f,c,i).root-servers.net.
2
12.192.in-addr.arpa.
in-addr.arpa.
(b,d,a,c,e,f).in-addr-servers.arpa.
3
12.192.in-addr.arpa.
192.in-addr.arpa.
(t,z,w,r,v,y,x,u).arin.net.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about 12.192.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask b.in-addr-servers.arpa where we learn that 192.in-addr.arpa is delegated to eight name servers, including t.arin.net (3), so we ask that one and get the following answer: