![](https://developers.google.com/speed/public-dns/images/adwords_features_v2_l.gif)
What is Google Public DNS?
Google Public DNS is a free, global Domain Name System (DNS) resolution service, that you can use as an alternative to your current DNS provider.
To try it out:
- Configure your network settings to use the IP addresses 8.8.8.8 and 8.8.4.4 as your DNS servers or
- Read our configuration instructions (IPv6 addresses supported too).
If you decide to try Google Public DNS, your client programs will perform all DNS lookups using Google Public DNS.
![](https://developers.google.com/speed/public-dns/images/laptop-128.gif)
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.
![](https://developers.google.com/speed/public-dns/images/spaceship-42.png)
Why should you try Google Public DNS?
By using Google Public DNS you can:
- Speed up your browsing experience.
- Improve your security.
- Get the results you expect with absolutely no redirection.
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