DNS delegation of 69.171.234.39 updated: May 18, 2013 10:19:52 PM
Delegation
step
query
auth
servers
1
39.234.171.69.in-addr.arpa.
.
(k,c,m,g,j,a,h,l,i,e,f,b,d).root-servers.net.
2
39.234.171.69.in-addr.arpa.
in-addr.arpa.
(a,b,e,c,f,d).in-addr-servers.arpa.
3
39.234.171.69.in-addr.arpa.
69.in-addr.arpa.
(u,y,z,r,v,w,x,t).arin.net.
4
39.234.171.69.in-addr.arpa.
234.171.69.in-addr.arpa.
(a,b).ns.facebook.com.
We pick k.root-servers.net, one of the 13 root servers (1), and ask it about 39.234.171.69.in-addr.arpa and learn that in-addr.arpa is delegated to six name servers (2), so we ask a.in-addr-servers.arpa where we learn that 69.in-addr.arpa is delegated to eight name servers, including u.arin.net (3), so we ask that one and learn that 234.171.69.in-addr.arpa is delegated to two name servers (4), so we ask a.ns.facebook.com and get the following answer: