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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-320 Area Code & Prefix

(312) 320-0xxx
(312) 320-1xxx
(312) 320-2xxx
(312) 320-3xxx
(312) 320-4xxx
(312) 320-5xxx
(312) 320-6xxx
(312) 320-7xxx
(312) 320-8xxx
(312) 320-9xxx