How to block a telephone number

Written by corey goodwin
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How to block a telephone number
Block those annoying and unwanted phone calls. (telephone image by Marek Kosmal from

The major telephone providers offer a call-blocking service that blocks phone calls from up to 10 numbers that a user adds to their block list. Call blocking prevents unwanted phone calls to your home phone. When blocked callers attempt to place a call to your phone, they receive a recording instead. AT&T calls the service "Call Blocker;" Verizon calls the service "Call Block;" and Qwest calls the service "Call Rejection." Although each provider calls the service by a different name, it works the same way and you will follow the same general procedure when using your call-blocking service.

Skill level:


  1. 1

    Dial *60 to set up your call block list. In some locations, you must press "3" to turn the service on or off.

  2. 2

    Follow the recorded instructions to enter telephone numbers you want to block.

  3. 3

    Listen to the instructions for options to add the last number that called you or to remove a number from the block list.

  4. 4

    Dial *80 to temporarily turn off your call-blocking service.

Tips and warnings

  • Consult the instructions provided by your carrier for specific details on call blocking.

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