After Google public DNS and Open DNS, Now you may use another Public DNS from Symantec Norton DNS Public Beta.
Ips of the Norton DNS public are 18.104.22.168 and 22.214.171.124
Read on how to set it up for windows here
After seting the DNS to norton you can check whether you made it corectly by visiting - http://setup.nortondns.com/
You can check How to find the best DNS for you before you change your existing DNS.