Area Code 638
Area Code 638 Assignment
Area Code 638 History:
Area Code 638 has not been assigned for use by the North American Numbering Plan Administrator. Area Code 638 is officially planned as a General Purpose area code which is typically assigned to a geographic area. If you receive a phone call from area code 638 it is a spam call. Any phone number such as 638-xxx-xxx does not exist.
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