What is area code 866?

Area code 866 is a toll-free number in the North American Numbering Plan (NANP). It is not assigned to a specific geographic area and is reserved for use by toll-free numbers. Calls made to an 866 number are typically free for the caller, and the recipient of the call is responsible for the cost of the call.

Toll-free numbers beginning with 866 are commonly used by businesses, organizations, and government agencies to provide customer support, helpline services, and other forms of communication that do not require the caller to incur any charges.

Calls to 866 numbers are routed through the Public Switched Telephone Network (PSTN) and can be dialed from any phone within the United States, Canada, and other countries that are part of the NANP.