DNS delegation of 0.172.253 updated: Jun 19, 2013 1:23:27 AM
Delegation
step
query
auth
servers
1
253.172.0.in-addr.arpa.
.
(l,i,j,d,k,c,f,e,b,a,m,g,h).root-servers.net.
2
253.172.0.in-addr.arpa.
in-addr.arpa.
(d,a,c,e,f,b).in-addr-servers.arpa.
We pick l.root-servers.net, one of the 13 root servers (1), and ask it about 253.172.0.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask d.in-addr-servers.arpa and get the following answer: