DNS delegation of 0.172.205 updated: May 23, 2013 4:34:08 PM
Delegation
step
query
auth
servers
1
205.172.0.in-addr.arpa.
.
(c,b,f,l,d,i,k,h,e,g,m,a,j).root-servers.net.
2
205.172.0.in-addr.arpa.
in-addr.arpa.
(f,b,a,d,c,e).in-addr-servers.arpa.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about 205.172.0.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask f.in-addr-servers.arpa and get the following answer: