Area Code 991
Area Code 991 Assignment
Area Code 991 History:
Area Code 991 has not been assigned for use by the North American Numbering Plan Administrator. Area Code 991 is officially planned as a General Purpose area code which is typically assigned to a geographic area, however, it is also designated as an Expansion Code which is reserved for future use if it becomes necessary to expand the current ten digit format. If you receive a phone call from area code 991 it is a spam call. Any phone number such as 991-xxx-xxx does not exist.
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