Area Code 644
Area Code 644 Assignment
Area Code 644 History:
Area Code 644 has not been assigned for use by the North American Numbering Plan Administrator. Area Code 644 is officially designated an Easily Recognizable Code.
When the second and third digits of an area code are the same, that code is called an easily recognizable code (ERC) and assigned to specific services such as toll-free services.
If you receive a phone call from area code 644 it is a spam call. Any phone number such as 644-xxx-xxx does not exist.