How to block phone number

1. Go to https://comca.st/3xNUkOe
2. Click the Voice icon  in the upper right
   
   Or
   Click the menu icon and select Voice in the drop-down list.
3. Enter your Xfinity ID and password.
4. Click the Settings icon in the upper-right corner of the page and click Settings to see the Voice Preferences menu.
5. Select Call Blocking.
6. Enter a telephone number and click Add to block the number. To remove a block, click on the trash icon next to an existing number.
7. Click the check-box for Block Anonymous Calls to add Anonymous Call Rejection.

Note: You can also block a number by locating it in the  Call History screen or  Voicemail screen (if a voicemail was left) and selecting  Block Caller > Confirm.

If You Have Xfinity Voice Only

1. Go to https://comca.st/3xNUkOe and click the Menu icon. 
2. Select Voice in the drop-down list.
3. Enter your Xfinity ID and password.
   • If you do not have an Xfinity ID and password, sign in using your Xfinity Voice telephone number and voicemail password.
   • You will see a message about Xfinity Connect. Click Register to register your Xfinity ID. This will allow you to access your Voice account through Xfinity Connect.
   • Note: If you do not click Register, you will be automatically redirected to the registration page.
4. Click the Settings icon in the upper-right corner of the page and click Settings to see the Voice Preferences menu.
5. Select Call Blocking.
6. Enter a telephone number and click Add to block the number. To remove a block, click on the trash icon next to an existing number.
7. Click the check-box for Block Anonymous Calls to add Anonymous Call Rejection.

Note: You can also block a number by locating it in the  Call History screen or  Voicemail screen (if a voicemail was left) and selecting  Block Caller > Confirm.