A default gateway allows devices within one network to send information to devices within another network. If you are requesting a certain web page, the traffic is first sent to your default gateway before leaving the local network to reach its intended destination.
Probably the simplest way to understand a default gateway is to think of it as an intermediary or middleman between your local network and the World Wide Web. It is essential for transmitting information from the local subnet to other subnets, and vice-versa.
On most home and business networks, which are usually made up of a single router and multiple connected computers and mobile devices, the private IP address given to your router is the default gateway IP address.
This numerical address will be called “default gateway” on Windows devices, while it is normally referred to as “router” on iOS and Mac devices. When it comes to other platforms, however, it might be named something along the likes of “gateway” or “gateway route”.
Learn the steps to find your gateway IP address on Windows, Mac OS X, Android, iPhone/iPad, Linux, and Chrome OS.
Note: The steps for finding your gateway IP on Android will vary depending on the version you are currently using.