DNS delegation of www.unam.mx updated: Jun 19, 2013 6:42:47 AM
Delegation
step
query
auth
servers
1
www.unam.mx.
.
(j,f,k,e,a,m,d,l,g,c,i,b,h).root-servers.net.
2
www.unam.mx.
mx.
(c,m,o,e,x,i).mx-ns.mx.
3
www.unam.mx.
unam.mx.
(ns3,ns4).unam.mx.
4
kenai.servidores.unam.mx.
unam.mx.
(ns4,ns3).unam.mx.
We pick j.root-servers.net, one of the 13 root servers (1), and ask it about www.unam.mx and learn that mx is delegated to six name servers (2), so we ask c.mx-ns.mx where we learn that unam.mx is delegated to two name servers, including ns3.unam.mx (3), so we ask that one where we see a CNAME from www.unam.mx to kenai.servidores.unam.mx, so we have to start all over again. We already know that ns4.unam.mx is authoritative for unam.mx (4) and ask it about kenai.servidores.unam.mx and get the following answer: