Nationwide Caller ID offers many benefits for consumers and for the economy as a whole. Nationwide Caller ID brings consumers rapid and efficient service, encourages the introduction of new technologies and new services to the public, and enables service providers and consumers to conduct transactions more efficiently. Who is Calling Caller ID is an optional service offered by telephone companies for an additional fee. For more information about Caller ID services offered in your area, contact your local telephone company or your state public service commission. Your number will not be sent to the other party.
Some states allow consumers to select per-line blocking.
When you dial a toll free number, the party you are calling pays for the call. Typically, the called party for toll free calls is able to identify your telephone number using a telephone network technology called Automatic Number Identification. FCC rules limit the subsequent use of this information and require carriers to inform consumers that telephone numbers are being transmitted in this way. Emergency Services Calls to emergency lines are exempted from Caller ID rules. State rules and policies govern carriers' obligation to honor caller privacy requests to emergency numbers.