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PHONE NUMBER PREFIXES IN THE 231 AREA CODE

Thousand digits 231-309 Area Code & Prefix

(231) 309-0xxx
(231) 309-1xxx
(231) 309-2xxx
(231) 309-3xxx
(231) 309-4xxx
(231) 309-5xxx
(231) 309-6xxx
(231) 309-7xxx
(231) 309-8xxx
(231) 309-9xxx