There is a way to use a look up cell phone number website in reverse to find out what cell phone, and who owns it, a particular number is registered to. This is called reverse cell phone look up, and it is extremely helpful for people who are given a cell phone number but not the person whom that number will call. By performing a reverse cell phone number look up, someone can figure out who owns the cell phone that has a particular cell phone number registered to it. Finding a website that can allow you to perform a reverse cell phone number look up is extremely easy, just use a search engine and type in “reverse cell phone number look up.”