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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-574 Area Code & Prefix

(312) 574-0xxx
(312) 574-1xxx
(312) 574-2xxx
(312) 574-3xxx
(312) 574-4xxx
(312) 574-5xxx
(312) 574-6xxx
(312) 574-7xxx
(312) 574-8xxx
(312) 574-9xxx