DNS delegation of 172.211 updated: May 20, 2013 2:32:22 AM
Delegation
step
query
auth
servers
1
211.172.in-addr.arpa.
.
(e,c,b,l,h,f,k,m,i,d,a,j,g).root-servers.net.
2
211.172.in-addr.arpa.
in-addr.arpa.
(f,e,b,d,c,a).in-addr-servers.arpa.
3
211.172.in-addr.arpa.
172.in-addr.arpa.
(z,y,x,r,v,t,u,w).arin.net.
4
211.172.in-addr.arpa.
211.172.in-addr.arpa.
(daha-01,daha-07,daha-02).ns.aol.com.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about 211.172.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask f.in-addr-servers.arpa where we learn that 172.in-addr.arpa is delegated to eight name servers, including z.arin.net (3), so we ask that one and learn that 211.172.in-addr.arpa is delegated to three name servers (4), so we ask daha-01.ns.aol.com and get the following answer: