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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-406 Area Code & Prefix

(312) 406-0xxx
(312) 406-1xxx
(312) 406-2xxx
(312) 406-3xxx
(312) 406-4xxx
(312) 406-5xxx
(312) 406-6xxx
(312) 406-7xxx
(312) 406-8xxx
(312) 406-9xxx