A lot of even partially tech savvy people know the IP address for Google’s DNS (Domain Name System) servers, 220.127.116.11 which is easy to remember. But you have to also consider what your usage of DNS says about you. It is a treasure trove of data about your likes and opinions. Every time you click a link or type in an address in your browser you query a DNS server. This is usually the ones provided by your ISP when you connect to the Internet. It is also how you get served those custom search result error pages when a site does not exist. So your ISP or whomever you use for DNS can tell A LOT about you from the sites and links you click on. Even your hobbies, interest, sexual propensities and more.
Seems like something you should want to keep private and protect from marketers and advertisers, right?
There is hope! You can manually change the DNS servers your computer or whole home network use.
There are two good ways to help protect your DNS queries. The first would be to use OpenNIC DNS and choose servers with no logging.