DNS delegation of 33.4.12 updated: May 23, 2013 2:19:36 PM
Delegation
step
query
auth
servers
1
12.4.33.in-addr.arpa.
.
(b,h,e,a,l,f,c,m,g,i,d,k,j).root-servers.net.
2
12.4.33.in-addr.arpa.
in-addr.arpa.
(e,b,d,f,c,a).in-addr-servers.arpa.
3
12.4.33.in-addr.arpa.
33.in-addr.arpa.
(con1r,pac2r,eur1r,pac1r,eur2r,con2r).nipr.mil.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about 12.4.33.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask e.in-addr-servers.arpa where we learn that 33.in-addr.arpa is delegated to six name servers, including con1r.nipr.mil (3), so we ask that one and get the following answer: