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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-488 Area Code & Prefix

(312) 488-0xxx
(312) 488-1xxx
(312) 488-2xxx
(312) 488-3xxx
(312) 488-4xxx
(312) 488-5xxx
(312) 488-6xxx
(312) 488-7xxx
(312) 488-8xxx
(312) 488-9xxx