On Windows, open Command Prompt and run `ipconfig`
On Mac, open Terminal and run `ifconfig`
On Linux, open Terminal and run `ip addr`
On iPhone, go to Settings > Wi-Fi > tap the connected network
On Android, go to Settings > Network & Internet > Wi-Fi > tap the connected network
To check your public IP, search “what is my IP” in a browser
To check your IP on a website, visit an IP lookup service
To check your router IP, open network settings or run `ipconfig` and look for the default gateway