DNS delegation of 202.144.128.210 updated: February 9, 2012 12:45
Delegation
step
query
auth
servers
1
210.128.144.202.in-addr.arpa.
.
(f,m,e,h,a,c,l,g,j,k,i,b,d).root-servers.net.
2
210.128.144.202.in-addr.arpa.
in-addr.arpa.
(a,e,d,f,b,c).in-addr-servers.arpa.
3
210.128.144.202.in-addr.arpa.
128.144.202.in-addr.arpa.
(ns2,ns1).druknet.bt.
We pick f.root-servers.net, one of the 13 root servers (1), and ask it about 210.128.144.202.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 128.144.202.in-addr.arpa is delegated to two name servers, including ns2.druknet.bt (3), so we ask that one and get the following answer: