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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-690 Area Code & Prefix

(312) 690-0xxx
(312) 690-1xxx
(312) 690-2xxx
(312) 690-3xxx
(312) 690-4xxx
(312) 690-5xxx
(312) 690-6xxx
(312) 690-7xxx
(312) 690-8xxx
(312) 690-9xxx