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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-570 Area Code & Prefix

(312) 570-0xxx
(312) 570-1xxx
(312) 570-2xxx
(312) 570-3xxx
(312) 570-4xxx
(312) 570-5xxx
(312) 570-6xxx
(312) 570-7xxx
(312) 570-8xxx
(312) 570-9xxx