DNS delegation of 0.172.211 updated: May 23, 2013 2:19:42 PM
Delegation
step
query
auth
servers
1
211.172.0.in-addr.arpa.
.
(m,l,f,g,d,k,c,h,b,e,j,i,a).root-servers.net.
2
211.172.0.in-addr.arpa.
in-addr.arpa.
(b,e,c,f,a,d).in-addr-servers.arpa.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about 211.172.0.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: