DNS delegation of 149.20.64.3 updated: Jun 18, 2013 10:32:28 PM
Delegation
step
query
auth
servers
1
3.64.20.149.in-addr.arpa.
.
(c,l,i,j,m,h,d,k,e,b,g,f,a).root-servers.net.
2
3.64.20.149.in-addr.arpa.
in-addr.arpa.
(b,f,a,c,d,e).in-addr-servers.arpa.
3
3.64.20.149.in-addr.arpa.
149.in-addr.arpa.
(w,u,y,r,v,z,t,x).arin.net.
4
3.64.20.149.in-addr.arpa.
20.149.in-addr.arpa.
(ams,sfba,ord).sns-pb.isc.org.
We pick c.root-servers.net, one of the 13 root servers (1), and ask it about 3.64.20.149.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 149.in-addr.arpa is delegated to eight name servers, including w.arin.net (3), so we ask that one and learn that 20.149.in-addr.arpa is delegated to three name servers (4), so we ask ams.sns-pb.isc.org and get the following answer: