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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-577 Area Code & Prefix

(312) 577-0xxx
(312) 577-1xxx
(312) 577-2xxx
(312) 577-3xxx
(312) 577-4xxx
(312) 577-5xxx
(312) 577-6xxx
(312) 577-7xxx
(312) 577-8xxx
(312) 577-9xxx