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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-291 Area Code & Prefix

(312) 291-0xxx
(312) 291-1xxx
(312) 291-2xxx
(312) 291-3xxx
(312) 291-4xxx
(312) 291-5xxx
(312) 291-6xxx
(312) 291-7xxx
(312) 291-8xxx
(312) 291-9xxx