How to Track a Prank Caller for Free

1. Call your phone company and have the operator review the last caller. Request to have the specific phone number blocked from your call list. Ask about fees.
2. Pick up your receiver, wait to hear the dial tone, then press '#73' to redial the last number.
3. Refer to your caller ID if your phone comes with a built-in identification feature. Trace incoming phone calls that are not blocked using the caller ID.
4. Keep a phone log and pen near the phone. Record the data and time of all harassing prank calls whenever possible. Notify the phone company or police if the prank calling becomes routine.
5. Contact your phone provider and request to have your number changed at no additional fee if the prank calling continues.
6. Use a free, online reverse phone lookup to obtain the city, state, and owner of the phone number. Proceed to contact the owner with caution.