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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-366 Area Code & Prefix

(312) 366-0xxx
(312) 366-1xxx
(312) 366-2xxx
(312) 366-3xxx
(312) 366-4xxx
(312) 366-5xxx
(312) 366-6xxx
(312) 366-7xxx
(312) 366-8xxx
(312) 366-9xxx