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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-591 Area Code & Prefix

(312) 591-0xxx
(312) 591-1xxx
(312) 591-2xxx
(312) 591-3xxx
(312) 591-4xxx
(312) 591-5xxx
(312) 591-6xxx
(312) 591-7xxx
(312) 591-8xxx
(312) 591-9xxx