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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-931 Area Code & Prefix

(312) 931-0xxx
(312) 931-1xxx
(312) 931-2xxx
(312) 931-3xxx
(312) 931-4xxx
(312) 931-5xxx
(312) 931-6xxx
(312) 931-7xxx
(312) 931-8xxx
(312) 931-9xxx