DNS delegation of 192.58.128 updated: Jun 19, 2013 1:40:57 AM
Delegation
step
query
auth
servers
1
128.58.192.in-addr.arpa.
.
(k,g,h,c,i,m,d,e,j,l,b,a,f).root-servers.net.
2
128.58.192.in-addr.arpa.
in-addr.arpa.
(b,d,f,c,e,a).in-addr-servers.arpa.
3
128.58.192.in-addr.arpa.
192.in-addr.arpa.
(t,u,z,x,w,y,r,v).arin.net.
4
128.58.192.in-addr.arpa.
128.58.192.in-addr.arpa.
(l2,e2,d2,c2).nstld.com.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about 128.58.192.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask b.in-addr-servers.arpa where we learn that 192.in-addr.arpa is delegated to eight name servers, including t.arin.net (3), so we ask that one and learn that 128.58.192.in-addr.arpa is delegated to four name servers (4), so we ask l2.nstld.com and get the following answer: