Use our lookup tool to get your Comcast ID or username. You'll need to provide your account number or your date of birth and the last 4 digits of your Social Security Number. This allows us to verify your identity.
Note: If you are an XFINITY Internet customer accessing the tool from your home, you'll only be prompted for the phone number associated with your account.
About Comcast ID
Each account number has a primary Comcast ID. A Comcast ID is a username, and has a password with a secret question and answer for password recovery. If you're an XFINITY Internet customer, your primary Comcast ID was created when you activated your Internet service.