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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-284 Area Code & Prefix

(312) 284-0xxx
(312) 284-1xxx
(312) 284-2xxx
(312) 284-3xxx
(312) 284-4xxx
(312) 284-5xxx
(312) 284-6xxx
(312) 284-7xxx
(312) 284-8xxx
(312) 284-9xxx