DNS delegation of 207.248.68.1 updated: May 26, 2013 12:57:19 AM
Delegation
step
query
auth
servers
1
1.68.248.207.in-addr.arpa.
.
(b,h,e,l,m,f,d,c,a,k,g,i,j).root-servers.net.
2
1.68.248.207.in-addr.arpa.
in-addr.arpa.
(c,b,a,d,f,e).in-addr-servers.arpa.
3
1.68.248.207.in-addr.arpa.
207.in-addr.arpa.
(t,w,r,x,u,v,z,y).arin.net.
4
1.68.248.207.in-addr.arpa.
68.248.207.in-addr.arpa.
(e,i,c,m,x,o).mx-ns.mx.
We pick b.root-servers.net, one of the 13 root servers (1), and ask it about 1.68.248.207.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 207.in-addr.arpa is delegated to eight name servers, including t.arin.net (3), so we ask that one and learn that 68.248.207.in-addr.arpa is delegated to six name servers (4), so we ask e.mx-ns.mx and get the following answer: