DNS delegation of 10.0.138 updated: May 24, 2013 6:52:48 PM
Delegation
step
query
auth
servers
1
138.0.10.in-addr.arpa.
.
(d,i,l,j,f,b,e,m,c,g,h,a,k).root-servers.net.
2
138.0.10.in-addr.arpa.
in-addr.arpa.
(a,e,c,d,f,b).in-addr-servers.arpa.
3
138.0.10.in-addr.arpa.
10.in-addr.arpa.
(blackhole-1,blackhole-2).iana.org.
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about 138.0.10.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask a.in-addr-servers.arpa where we learn that 10.in-addr.arpa is delegated to two name servers, including blackhole-1.iana.org (3), so we ask that one and get the following answer: