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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-391 Area Code & Prefix

(312) 391-0xxx
(312) 391-1xxx
(312) 391-2xxx
(312) 391-3xxx
(312) 391-4xxx
(312) 391-5xxx
(312) 391-6xxx
(312) 391-7xxx
(312) 391-8xxx
(312) 391-9xxx