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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-974 Area Code & Prefix

(312) 974-0xxx
(312) 974-1xxx
(312) 974-2xxx
(312) 974-3xxx
(312) 974-4xxx
(312) 974-5xxx
(312) 974-6xxx
(312) 974-7xxx
(312) 974-8xxx
(312) 974-9xxx