On Comcast, how do you block a phone number?

Customers of Comcast Xfinity have a number of alternatives for preventing telemarketers from calling a landline or mobile phone. To block certain phone numbers, Comcast offers both a robocall blocker and a call screening service.

Customers of Xfinity Voice can dial *60 on their landline or mobile phone to start setting up call screening for certain numbers. The method of entering the phone numbers you want to screen will be explained to you.

You can manage call screening online by logging into your account if you have both Xfinity Voice and Xfinity Internet. Visit the Xfinity homepage (www.xfinity.com) and click the Voice symbol in the top right corner of the screen to accomplish this. Entering your login and password will be required.

Once you’ve done that, click Settings in the top-right corner of the website to access the Voice Preferences menu. Select Call Blocking next. You will be able to input any phone numbers you want to block here.

Additionally, Comcast Xfinity provides home XFINITY Voice Unlimited users with the Nomorobo service, which prevents unwanted telemarketing robocalls. Go to the Nomorobo homepage (https://www.nomorobo.com/signup) to get started by selecting Comcast XFINITY as your provider in the first step.

By providing your email address and choosing Next, complete step two. After that, you’ll get an email with additional setup instructions for integrating Nomorobo with your phone line.

Misha Khatri
Misha Khatri is an emeritus professor in the University of Notre Dame's Department of Chemistry and Biochemistry. He graduated from Northern Illinois University with a BSc in Chemistry and Mathematics and a PhD in Physical Analytical Chemistry from the University of Utah.


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