You can change your IP address from the network settings controls menu on a Windows PC, Mac, and even your phone.
The majority of the time, we have no idea what the IP addresses of our devices are. You don't need to know that your phone has an IP address of 192.168.1.12 on your local network in order to use it.
Every Roku has its own IP address, which allows the device to join your home network. Here's how to find your Roku IP address ...