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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-478 Area Code & Prefix

(312) 478-0xxx
(312) 478-1xxx
(312) 478-2xxx
(312) 478-3xxx
(312) 478-4xxx
(312) 478-5xxx
(312) 478-6xxx
(312) 478-7xxx
(312) 478-8xxx
(312) 478-9xxx