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PHONE NUMBER PREFIXES IN THE 231 AREA CODE

Thousand digits 231-423 Area Code & Prefix

(231) 423-0xxx
(231) 423-1xxx
(231) 423-2xxx
(231) 423-3xxx
(231) 423-4xxx
(231) 423-5xxx
(231) 423-6xxx
(231) 423-7xxx
(231) 423-8xxx
(231) 423-9xxx