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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-731 Area Code & Prefix

(312) 731-0xxx
(312) 731-1xxx
(312) 731-2xxx
(312) 731-3xxx
(312) 731-4xxx
(312) 731-5xxx
(312) 731-6xxx
(312) 731-7xxx
(312) 731-8xxx
(312) 731-9xxx