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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-306 Area Code & Prefix

(312) 306-0xxx
(312) 306-1xxx
(312) 306-2xxx
(312) 306-3xxx
(312) 306-4xxx
(312) 306-5xxx
(312) 306-6xxx
(312) 306-7xxx
(312) 306-8xxx
(312) 306-9xxx