DNS delegation of 0.172.249 updated: Jun 18, 2013 7:05:53 AM
Delegation
step
query
auth
servers
1
249.172.0.in-addr.arpa.
.
(m,g,a,j,h,e,c,k,d,f,b,l,i).root-servers.net.
2
249.172.0.in-addr.arpa.
in-addr.arpa.
(f,d,e,a,b,c).in-addr-servers.arpa.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about 249.172.0.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: