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PHONE NUMBER PREFIXES IN THE 231 AREA CODE

Thousand digits 231-637 Area Code & Prefix

(231) 637-0xxx
(231) 637-1xxx
(231) 637-2xxx
(231) 637-3xxx
(231) 637-4xxx
(231) 637-5xxx
(231) 637-6xxx
(231) 637-7xxx
(231) 637-8xxx
(231) 637-9xxx