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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-506 Area Code & Prefix

(312) 506-0xxx
(312) 506-1xxx
(312) 506-2xxx
(312) 506-3xxx
(312) 506-4xxx
(312) 506-5xxx
(312) 506-6xxx
(312) 506-7xxx
(312) 506-8xxx
(312) 506-9xxx