How do telemarketers use FAKE numbers?

Caller ID is not 100% reliable - it is a code transmitted to your phone by the caller's phone company. Some phone companies will let their users change their caller ID - this is very useful for corporate lines where the company wants the outgoing caller ID to be the same for all of their employees.

Recently, a company has made this technology available to the public. They provide a phone card which you can use to choose the outgoing caller ID (CID) that will be displayed on the called party's phone.

This is the ultimate prank tool and it has been featured in several movies.

You can try it for FREE by clicking the banner below: