On Windows, open Command Prompt and type `ipconfig`
On Windows, go to Settings > Network & Internet > Properties
On macOS, open System Settings > Network
On macOS, open Terminal and type `ifconfig`
On Linux, open Terminal and type `ip addr`
On Linux, open Terminal and type `hostname -I`
To find your public IP, search “what is my IP” in a browser
To find your router IP, check the Default Gateway in network settings
To find your local IP, look for IPv4 Address in network details