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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-821 Area Code & Prefix

(312) 821-0xxx
(312) 821-1xxx
(312) 821-2xxx
(312) 821-3xxx
(312) 821-4xxx
(312) 821-5xxx
(312) 821-6xxx
(312) 821-7xxx
(312) 821-8xxx
(312) 821-9xxx