Google started Public DNS service like OpenDNS.
Google Public DNS server IP address are
8.8.8.8
8.8.4.4
You can use google dns for resolving name servers by editing resolv.conf
vi /etc/resolv.conf
add
nameserver 8.8.8.8
nameserver 8.8.4.4
For more information on Google Public DNS visit
http://code.google.com/speed/public-dns/docs/using.html
See other Public DNS Servers at
http://blog.hostonnet.com/tag/opendns-server
