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How to Trace an Unknown Number

Updated February 21, 2017

It can be distressing to constantly receive unknown calls, only to think there is no way of tracing them. Tracing a number involves getting information about who is calling and where they are calling from. Luckily, with modern technology and a simple, standard phone, there is a way to trace unknown numbers. The process may take awhile but it can be done, and you can finally learn who is calling you.

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  1. Pick up your telephone’s receiver and listen for the dial tone. The dial tone must be present within your phone before you can begin the tracing process.

  2. Dial *57 on your telephone. This number must be dialled immediately after the unknown call has been made. If this number is dialled an hour or two after the initial unknown call, the service may trace another call. There is a small fee for this service, which will be added to your phone bill. Contact your phone company to inquire about the fee.

  3. After you have dialled *57, listen for a brief announcement. It will verify that you have traced the unknown caller successfully. The traced call will be transferred to the phone company.

  4. Contact the phone company to have them send you the proper authorisation form. Read and sign it. If these unknown calls were ever threatening, you can file a police report and the police department will work with your phone company to further investigate the matter.

  5. Tip

    If you receive any threatening phone call, you should definitely contact your local police department.

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Things You'll Need

  • Telephone

About the Author

Based in New Jersey, Ashley Leonard has been writing professionally since 2007. Her articles have appeared on rsportscars.com and various other websites. Leonard holds a Bachelor of Arts in communications from Marymount Manhattan College.

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