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PHONE NUMBER PREFIXES IN THE 231 AREA CODE

Thousand digits 231-310 Area Code & Prefix

(231) 310-0xxx
(231) 310-1xxx
(231) 310-2xxx
(231) 310-3xxx
(231) 310-4xxx
(231) 310-5xxx
(231) 310-6xxx
(231) 310-7xxx
(231) 310-8xxx
(231) 310-9xxx