DNS delegation of 0.172.200 updated: Jun 19, 2013 4:28:44 AM
Delegation
step
query
auth
servers
1
200.172.0.in-addr.arpa.
.
(b,d,c,h,i,l,f,m,k,e,j,a,g).root-servers.net.
2
200.172.0.in-addr.arpa.
in-addr.arpa.
(b,c,a,f,e,d).in-addr-servers.arpa.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about 200.172.0.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask b.in-addr-servers.arpa and get the following answer: