Area Code 866
Area Code 866 History:
Area code 866 was officially put into service. With toll free numbers the charges are paid for by the party who is called instead of the caller. Although area code 866 is not assigned to a geographical area or time zone, calls to any toll free number may be restricted by the customer. Other toll free area codes are 800, 833, 844, 855, 877, and 888.
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