How to Configure Google Public DNS IP Resolver on cPanel
Login your WHM as root user then find ” Resolver Configuration ” and then use Google Public DNS IP addresses .
The Google Public DNS IP addresses are as follows:
You can use either number as your primary or secondary DNS server. You can specify both numbers, but do not specify one number as both primary and secondary.
Details : You can read more after the link: http://code.google.com/speed/public-dns/docs/using.html