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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-438 Area Code & Prefix

(312) 438-0xxx
(312) 438-1xxx
(312) 438-2xxx
(312) 438-3xxx
(312) 438-4xxx
(312) 438-5xxx
(312) 438-6xxx
(312) 438-7xxx
(312) 438-8xxx
(312) 438-9xxx