What Is DNS, and Should I Use Another DNS Server?

Did you know you could be connected to facebook.com—and see facebook.com in your browser’s address bar—while not actually being connected to Facebook’s real website? To understand why, you’ll need to know a bit about DNS.

The Domain Name System (DNS) underpins the web we use every day. It works transparently in the background, converting human-readable website names into computer-readable numerical IP addresses. DNS does this by looking up that information on a system of linked DNS servers across the Internet. However, different DNS servers can behave differently in terms of speed and security. So, let’s take a look at how DNS works and what you can do to make sure it’s working its best for you.

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