DNS delegation of 74.125.45 updated: Jun 19, 2013 9:13:21 PM
Delegation
step
query
auth
servers
1
45.125.74.in-addr.arpa.
.
(d,b,e,f,l,c,j,a,h,m,g,i,k).root-servers.net.
2
45.125.74.in-addr.arpa.
in-addr.arpa.
(c,a,d,e,f,b).in-addr-servers.arpa.
3
45.125.74.in-addr.arpa.
74.in-addr.arpa.
(u,r,w,v,y,x,t,z).arin.net.
4
45.125.74.in-addr.arpa.
125.74.in-addr.arpa.
(ns1,ns3,ns2,ns4).google.com.
We pick d.root-servers.net, one of the 13 root servers (1), and ask it about 45.125.74.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask c.in-addr-servers.arpa where we learn that 74.in-addr.arpa is delegated to eight name servers, including u.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 ns1.google.com and get the following answer: