Localhost (also known as loopback address) is a term used to define a network address that is used by a device (usually a computer or a server) to refer to itself. In other words, it’s a way for your device to establish a network connection to itself. The most commonly used IP address for localhost is, which is reserved as a loopback address in IPv4 networks. For IPv6 networks, it’s represented by ::1.

Purpose and Usage of Localhost

Localhost is useful for a variety of reasons, such as:

Connecting to Localhost

To connect to localhost, you can use several methods depending on the tasks you want to accomplish:

Remember, connections to localhost do not pass through your computer’s physical network interfaces, and as such, they’re not subject to the same security risks or performance limitations that a real network connection might have.