DNS delegation of 173.194.37 updated: Jun 19, 2013 7:06:22 PM
Delegation
step
query
auth
servers
1
37.194.173.in-addr.arpa.
.
(b,d,f,j,m,k,a,l,g,e,h,i,c).root-servers.net.
2
37.194.173.in-addr.arpa.
in-addr.arpa.
(e,c,b,f,a,d).in-addr-servers.arpa.
3
37.194.173.in-addr.arpa.
173.in-addr.arpa.
(u,y,t,x,w,r,z,v).arin.net.
4
37.194.173.in-addr.arpa.
194.173.in-addr.arpa.
(ns2,ns3,ns1,ns4).google.com.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about 37.194.173.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 173.in-addr.arpa is delegated to eight name servers, including u.arin.net (3), so we ask that one and learn that 194.173.in-addr.arpa is delegated to four name servers (4), so we ask ns2.google.com and get the following answer: