Android: Open WiFi Analyzer and go to ☰ > Access points > your router. The IP address for your router is important because that's the address you'll have to type into your browser in order to locate your router's web-based setup page where you can configure its settings. There are more ways to find your IP Address on Windows than you'll ever likely need. Here are. To connect your fiber optic cable to a router, ensure you have the following: Fiber optic modem (ONT): Most fiber connections require an Optical Network Terminal (ONT), provided by your ISP. Here are step-by-step instructions on how to find my router IP address: Windows provides a couple of easy ways to find your router's IP address, either using the command. To set up your router for fiber internet quickly, connect the router to your fiber modem, access the router's settings via a web browser, and input the provided ISP credentials.