Area code 866

Area Code 866 is a toll-free telephone area code in the North American Numbering Plan (NANP). It is used for toll-free numbers, meaning the person making the call does not pay for the call; instead, the receiving party pays. It entered service on July 29, 2000. It is one of several toll-free area codes in North America. Other toll-free area codes include 800, 833, 844, 855, 877, and 888. These codes are not tied to a specific geographic region and can be used anywhere in the United States, Canada, and other countries participating in the North American Numbering Plan.