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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-237 Area Code & Prefix

(312) 237-0xxx
(312) 237-1xxx
(312) 237-2xxx
(312) 237-3xxx
(312) 237-4xxx
(312) 237-5xxx
(312) 237-6xxx
(312) 237-7xxx
(312) 237-8xxx
(312) 237-9xxx