To fin the Xfinity router IP address on Windows, then click on Windows + R, and with this, the prompt will open. After this, you can type CMD into the input and then click on enter. A command prompt will open with this. Type ipconfig / Findstr / i “Gateway” and choose to enter. The default gateway will be 184.108.40.206. Here, it will be presented with the Xfinity router IPaddress. Follow the steps, and you can find the Xfinity router IP address on Windows devices easily.