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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-331 Area Code & Prefix

(312) 331-0xxx
(312) 331-1xxx
(312) 331-2xxx
(312) 331-3xxx
(312) 331-4xxx
(312) 331-5xxx
(312) 331-6xxx
(312) 331-7xxx
(312) 331-8xxx
(312) 331-9xxx