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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-307 Area Code & Prefix

(312) 307-0xxx
(312) 307-1xxx
(312) 307-2xxx
(312) 307-3xxx
(312) 307-4xxx
(312) 307-5xxx
(312) 307-6xxx
(312) 307-7xxx
(312) 307-8xxx
(312) 307-9xxx