Las ip de los DNS que das, son correctas:
[celtha@gandalf ~]$ nslookup
server 200.6.96.5
Default server: 200.6.96.5 Address: 200.6.96.5#53
google.es
Server: 200.6.96.5 Address: 200.6.96.5#53
Non-authoritative answer: Name: google.es Address: 74.125.77.104 Name: google.es Address: 209.85.229.104 Name: google.es Address: 216.239.59.104
google.cl
Server: 200.6.96.5 Address: 200.6.96.5#53
Non-authoritative answer: Name: google.cl Address: 216.239.59.104 Name: google.cl Address: 74.125.77.104 Name: google.cl Address: 209.85.229.104
Puedes ejecutar "nslookup" y "server", para garantizar que tienes estos DNS? $nslookup
server
Default server: 200.6.96.5 Address: 200.6.96.5#53