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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-450 Area Code & Prefix

(312) 450-0xxx
(312) 450-1xxx
(312) 450-2xxx
(312) 450-3xxx
(312) 450-4xxx
(312) 450-5xxx
(312) 450-6xxx
(312) 450-7xxx
(312) 450-8xxx
(312) 450-9xxx