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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-866 Area Code & Prefix

(312) 866-0xxx
(312) 866-1xxx
(312) 866-2xxx
(312) 866-3xxx
(312) 866-4xxx
(312) 866-5xxx
(312) 866-6xxx
(312) 866-7xxx
(312) 866-8xxx
(312) 866-9xxx