Fake Caller ID and Caller ID Spoofing

SpoofCard Caller ID Spoofing

What is Caller ID?

What is caller ID?Caller ID (caller identification or CID for short, and officially abbreviated as CNID –  calling number identification) is a popular telephone feature that sends the caller’s number to the called party’s telephone equipment during the ringing signal stage of a phone call. This is when the call is being set up but before the call is answered. This feature is available in most areas and can come with the optional service of providing a name associated with the calling telephone number. Depending on the call recipients telephone equipment, the information may display on the telephone’s own display or on a separate attached caller ID device.

What is Caller ID Spoofing?

What is caller ID spoofing and how can I fake my caller ID?Caller ID spoofing is a method in which a person can cause the telephone network to display a number on the recipient’s caller ID display which is not the number of the originating caller. The term is commonly used to describe deceptive situations in which the caller has nefarious motives. Since caller ID spoofing can make a phone call look like it’s coming from any phone number the caller wants and because people usually assume a call is actually coming from the number being displayed (and therefore, the associated person, persons, or organization), all kinds of things (both legal and illegal) can be done with such a manipulative ability.

Why Would I Want to Fake My Caller ID?

It seems as though many of the reasons one would want to give use fake caller ID are unscrupulous, there are many legitimate uses too. Large companies use it for their call centers and telemarketing departments. Private investigators and bail bondsmen use it to investigate people and to locate people who have skipped out on their bonds. Individuals might want to display their home or work number when not calling from those locations, such as a small business owner calling clients from a cell phone; they may not want their cell phone number to show up on caller ID. There is a  gray area in regards to using caller ID spoofing for practical joke reasons, just keep in mind that all calls are logged somewhere and they can be traced back to originating caller number and location. For a more indepth look at uses for Caller ID spoofing, see our usage guide

What Else Can I Do With It?

What else can I do with Fake Caller ID?There are many different additional services now available that go along with faking your caller ID. Some of these include the ability to change your voice. Imagine being able to change your voice to any number of different preset voice pitches. Most of the providers of caller ID spoofing also allow you to record the calls you place. There are even some services that allow you to turn text into speech alongside the ability to spoof someone’s caller ID. There is even SMS spoofing available where you can “spoof” a text message. The possibilities are endless. Are you looking for the computer voice generated caller ID changing demo that was previously hosted at this site? We have changed our format, but the technology is still available from some places. We no longer offer such a demo.

How Does Caller ID Spoofing Work?

Caller ID is spoofed through a variety of different methods, with the most common ways of spoofing Caller ID are through the use of Voice over IP and/or PRI lines.


Another method involves emulating the Bell 202 FSK signal. This method, called orange boxing, uses software that can generate the audio signal that can be coupled to the telephone line during a telephone call. The object is to deceive the called party into thinking that there is an incoming call waiting from the spoofed number, when in fact there is no incoming call. This technique often involves an accomplice who may provide a secondary voice to complete the illusion of a call waiting call. Because the orange box cannot truly spoof incoming caller ID prior to answering, and relies on the guile of the caller, it is often considered as much a social engineering technique as it is a technical hack.


Other methods include: switch access to the SS7 network; and social engineering telephone company operators who place calls for you from the desired phone number. Another method that is not used as often is VXML.