Bluff My Call is a service that changes a telephone caller's identification number. The service also allows a caller to contact international destinations, disguise his voice, record the phone conversation or directly leave a message to the called party's voicemail.

A caller can use Bluff My Call to maintain anonymity or to disguise his location. To use the service, a customer pays for either a prepaid package or a one-month unlimited subscription. Bluff My Call ensures that changing the caller ID is legal but discourages the use of its services to conduct illegal activities. It also guarantees that all calls are untraceable.