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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-999 Area Code & Prefix

(312) 999-0xxx
(312) 999-1xxx
(312) 999-2xxx
(312) 999-3xxx
(312) 999-4xxx
(312) 999-5xxx
(312) 999-6xxx
(312) 999-7xxx
(312) 999-8xxx
(312) 999-9xxx