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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-490 Area Code & Prefix

(312) 490-0xxx
(312) 490-1xxx
(312) 490-2xxx
(312) 490-3xxx
(312) 490-4xxx
(312) 490-5xxx
(312) 490-6xxx
(312) 490-7xxx
(312) 490-8xxx
(312) 490-9xxx