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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-279 Area Code & Prefix

(312) 279-0xxx
(312) 279-1xxx
(312) 279-2xxx
(312) 279-3xxx
(312) 279-4xxx
(312) 279-5xxx
(312) 279-6xxx
(312) 279-7xxx
(312) 279-8xxx
(312) 279-9xxx