Google

Google has just made available to everyone a free dns server that you can use as a primary or secondary service.
Why does DNS matter?

The DNS protocol is an important part of the web’s infrastructure, serving as the Internet’s phone book: every time you visit a website, your computer performs a DNS lookup. Complex pages often require multiple DNS lookups before they start loading, so your computer may be performing hundreds of lookups a day.

By using Google Public DNS you can:

• Speed up your browsing experience.
• Improve your security.
• Get the results you expect with absolutely no redirection.

For more information on Google’s public DNS servers follow this link.