To find Spectrum IP address for router for Windows device, right-click on Windows icon in the bottom left of the screen and then choose command prompt. From the Command Prompt window, type ipconfig and click to enter. After that, find the default gateway section. The number will be listed in the Spectrum router IP address. So, these are the smooth steps to easily find the Spectrum router IP address without any confusion. But if you are using a Mac device, then steps will change accordingly.