How Can You Block a Phone Number on Comcast?

Comcast Xfinity customers have several options for blocking calls from unwanted numbers to a landline or cell phone. Comcast provides both a robocall blocker and a call screening service that can be used to block specific numbers.

To set up call screening for individual numbers, Xfinity Voice customers can start by dialing *60 on their landline or cell phone. You will be guided through the process of entering the numbers you wish to screen over the phone. If you have both Xfinity Voice and Xfinity Internet, you can also log into your account to manage call screening online. To do this, navigate to the Xfinity home page ( and select the Voice icon in the upper right corner of the screen. You will be prompted to enter your username and password. After you have done so, select the Settings option in the upper-right corner of the web page to see the Voice Preferences menu. Next, select Call Blocking. Here you will have the ability to enter telephone numbers that you wish to block.

Comcast Xfinity also offers a service that blocks unwanted telemarketing robocalls to residential XFINITY Voice Unlimited customers called Nomorobo. To set up this service, navigate to the Nomorobo home page ( and complete the first step by selecting Comcast XFINITY as your carrier. Complete the second step by entering your email address and selecting Next. You will then receive an email with further instructions for setting up Nomorobo with your phone line.