You are probably wondering what exactly Xfinity Internet is and whether it is for you. To begin with, Xfinity is a high speed internet service provided by Level Yellow Communications to customers in San Diego, California. This is a high speed internet service that works very well with the telephone lines available in the San Diego area. When you activate xfinity.com/authorize, you become a member
plan which has two separate plans. One to use on your own computer, the other to connect to the television service.