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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-454 Area Code & Prefix

(312) 454-0xxx
(312) 454-1xxx
(312) 454-2xxx
(312) 454-3xxx
(312) 454-4xxx
(312) 454-5xxx
(312) 454-6xxx
(312) 454-7xxx
(312) 454-8xxx
(312) 454-9xxx