When Google Public DNS launched in late 2009, it was only ever supposed to be an experiment. But yesterday, Google announced that it's now the most popular public DNS in the world, handling over 70 billion requests per day.
To use Google engineer Jeremy K. Chen's own simile, as expressed in the official blog entry, DNS - short for Domain Name System - is like the Internet's phone book. When you put a URL into the browser, the DNS service looks it up and matches it to an IP address. Google Public DNS aims to be the most complete, fastest, and most secure listing of its kind out there for users all over the world.
In fact, Chen writes that 70 percent of Google Public DNS traffic comes from outside the US, thanks to existing nodes in North and South America, bolstered support in Europe, and all-new nodes for regions like Japan, Australia, India and Nigeria.
Of course, Google critics are wondering what good could come of the search giant having access to even more user data - in this case, a log of every single website that Google Public DNS visitors go to, all day, every day.