Address : 7263 Grandville, Detroit, MI 48228 Phone : 313-554-9000 Internet Service USA is a Nationwide internet service provider located in Detroit, Michigan. Our focus is on assisting you to find the best internet, cable, and phone service provider in your region. To us, it is not just providing you with a list of internet service providers in your area. Our agents have spent years analyzing and scrutinizing internet providers so that we can provide accurate results.