DNS delegation of 172.206 updated: May 19, 2013 6:27:27 PM
Delegation
step
query
auth
servers
1
206.172.in-addr.arpa.
.
(e,l,f,b,m,k,g,j,i,d,c,a,h).root-servers.net.
2
206.172.in-addr.arpa.
in-addr.arpa.
(c,e,f,a,b,d).in-addr-servers.arpa.
3
206.172.in-addr.arpa.
172.in-addr.arpa.
(w,t,u,r,y,x,z,v).arin.net.
4
206.172.in-addr.arpa.
206.172.in-addr.arpa.
(daha-07,daha-01,daha-02).ns.aol.com.
We pick e.root-servers.net, one of the 13 root servers (1), and ask it about 206.172.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 172.in-addr.arpa is delegated to eight name servers, including w.arin.net (3), so we ask that one and learn that 206.172.in-addr.arpa is delegated to three name servers (4), so we ask daha-07.ns.aol.com and get the following answer: