How to check a phone number's validity

Written by karen kramer
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How to check a phone number's validity
Use a reverse number service to validate phone numbers. (telephone image by Vasiliy Koval from

You can verify a phone number's validity before making a call, whether the number is listed on a paid lead form or written on the back of a napkin, or an unknown number on a caller ID. There are paid and free services that will complete a reverse lookup, checking the number's validity and listing the phone's registered owner.

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  1. 1

    Go to the Phone Validator website (>

  2. 2

    Enter the phone number in the "Enter Phone Number" box.

  3. 3

    Click on the "Search" button.

  4. 4

    Click on "Click Here for Results," next to the "Directory Assistance Results" column.

  5. 5

    Review the results.

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