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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-599 Area Code & Prefix

(312) 599-0xxx
(312) 599-1xxx
(312) 599-2xxx
(312) 599-3xxx
(312) 599-4xxx
(312) 599-5xxx
(312) 599-6xxx
(312) 599-7xxx
(312) 599-8xxx
(312) 599-9xxx