How to Trace Blocked Cell Phone Numbers

If you want to find out who's been calling you from a blocked, anonymous or private number, it's not always an easy thing to do. Generally, you cannot trace the number unless the calls are obscene, harassing or threatening, in which case, you should alert your cell phone service provider and the local authorities.

...
Calls from anonymous numbers are annoying, but there are steps you can take to trace them.

There are, however, some steps you can take to document cases of harassing calls from private numbers. You also can pay for private services, which will investigate the source of anonymous calls.

Step

Document every call you receive from a blocked or private number. You can do this by accessing your cell phone's "incoming/missed calls" or Caller ID on your land-line phone.

Step

Keep a written log noting the date and time of each incoming blocked call. This will be important in civil or criminal investigations.

Step

Contact your phone company and ask them if they can identify who is behind the "private" or "anonymous" number (this is not always possible).

Step

Ask your phone company to block all calls from the number that keeps harassing you. This will work only if your phone company can positively identify the number.

Step

Hire a private investigator if the anonymous calls are really bothering you. Be prepared to spend up to several hundred dollars if your harasser isn't easy to locate.

Step

Unblock private numbers with TrapCall. As of August 2010, TrapCall is the only company that offers this service to the general public; such technology was previously only available to police and private investigators.

Step

Go to TrapCall.com and select one of the service plans. As of 2010, the monthly fee is around $25. However, TrapCall does offer a free 15-day trial.

Step

Follow TrapCall's setup guide to forward unwanted blocked calls to TrapCall's toll-free number. Callers will never know their call is being forwarded; they will simply hear your standard voice mail greeting if you do not accept the call.

Step

Sit back and let the TrapCall service work it's magic: the call will be re-routed back to you, this time with the caller ID unblocked. Then add the troublesome number to your "blocked callers" list.