DNS delegation of 172.199 updated: May 26, 2013 2:35:27 AM
Delegation
step
query
auth
servers
1
199.172.in-addr.arpa.
.
(m,a,e,b,i,l,d,g,h,k,j,f,c).root-servers.net.
2
199.172.in-addr.arpa.
in-addr.arpa.
(b,a,d,c,e,f).in-addr-servers.arpa.
3
199.172.in-addr.arpa.
172.in-addr.arpa.
(y,r,x,v,t,u,z,w).arin.net.
4
199.172.in-addr.arpa.
199.172.in-addr.arpa.
(daha-02,daha-01,daha-07).ns.aol.com.
We pick m.root-servers.net, one of the 13 root servers (1), and ask it about 199.172.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 172.in-addr.arpa is delegated to eight name servers, including y.arin.net (3), so we ask that one and learn that 199.172.in-addr.arpa is delegated to three name servers (4), so we ask daha-02.ns.aol.com and get the following answer: