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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-878 Area Code & Prefix

(312) 878-0xxx
(312) 878-1xxx
(312) 878-2xxx
(312) 878-3xxx
(312) 878-4xxx
(312) 878-5xxx
(312) 878-6xxx
(312) 878-7xxx
(312) 878-8xxx
(312) 878-9xxx