DNS delegation of 74.125.132 updated: Jun 20, 2013 3:06:39 AM
Delegation
step
query
auth
servers
1
132.125.74.in-addr.arpa.
.
(d,i,e,g,l,k,b,c,a,h,j,f,m).root-servers.net.
2
132.125.74.in-addr.arpa.
in-addr.arpa.
(a,e,f,c,b,d).in-addr-servers.arpa.
3
132.125.74.in-addr.arpa.
74.in-addr.arpa.
(y,v,u,x,r,z,w,t).arin.net.
4
132.125.74.in-addr.arpa.
125.74.in-addr.arpa.
(ns4,ns2,ns1,ns3).google.com.
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about 132.125.74.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 74.in-addr.arpa is delegated to eight name servers, including y.arin.net (3), so we ask that one and learn that 125.74.in-addr.arpa is delegated to four name servers (4), so we ask ns4.google.com and get the following answer: