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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-280 Area Code & Prefix

(312) 280-0xxx
(312) 280-1xxx
(312) 280-2xxx
(312) 280-3xxx
(312) 280-4xxx
(312) 280-5xxx
(312) 280-6xxx
(312) 280-7xxx
(312) 280-8xxx
(312) 280-9xxx