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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-557 Area Code & Prefix

(312) 557-0xxx
(312) 557-1xxx
(312) 557-2xxx
(312) 557-3xxx
(312) 557-4xxx
(312) 557-5xxx
(312) 557-6xxx
(312) 557-7xxx
(312) 557-8xxx
(312) 557-9xxx