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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-321 Area Code & Prefix

(312) 321-0xxx
(312) 321-1xxx
(312) 321-2xxx
(312) 321-3xxx
(312) 321-4xxx
(312) 321-5xxx
(312) 321-6xxx
(312) 321-7xxx
(312) 321-8xxx
(312) 321-9xxx