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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-990 Area Code & Prefix

(312) 990-0xxx
(312) 990-1xxx
(312) 990-2xxx
(312) 990-3xxx
(312) 990-4xxx
(312) 990-5xxx
(312) 990-6xxx
(312) 990-7xxx
(312) 990-8xxx
(312) 990-9xxx