How to Trace the Location of a Spoof Card Call

By Pamela Miller

With advancements in technology, people have numerous methods available to block a number when placing a phone call. Spoofing a telephone number is a method that developed and became illegal in 2007. This method actually makes a number appear as a different number when it shows up on caller ID, which can be quite confusing for anyone receiving one of these phone calls. An individual can be certain that a number was a spoof call if he attempts to call a number back and it is not in service. In some cases, tracing the location of a spoof call might give some peace of mind.

Things You'll Need

  • Trap Line (ANI)

Step 1

Obtain the spoofed number from caller ID.

Step 2

Try calling the number back to verify that the number is a spoofed number. Sometimes a recording will be played stating that the number is not in service. This is a sure way to know that it is a spoofed number. In other cases, a perfect stranger may answer who has nothing to do with the nuisance phone call.

Step 3

Visit a website that offers a reverse look-up tool to go through any and all possible search engines and locate the source of the number.

Step 4

Rent a trap line, a technological tool that unblocks blocked phone calls or spoofed numbers. Multiple companies offer this service. A trap line is commonly used by private investigators to trace the exact location of a caller. Trap lines use Automatic Number Identification.

Step 5

Report ongoing unwanted telephone calls to the police and local telephone company. According to, a harassing phone call is classified by a call that uses abusive or threatening language. It can also be any phone call that uses heavy breathing or silence as a form of intimidation. Multiple phone calls, of course, also fall into this category.

Tips & Warnings

  • Keep in mind that a spoofed number could be the number of someone totally innocent and unrelated to the unwanted telephone call. When calling a number back when trying to investigate a spoofed call, remember that the person on the other end of the line may not be the individual who placed the call.
  • Police cannot become involved with an unwanted telephone call unless the calls have been received multiple times or if abusive or threatening language has occurred during the phone calls.