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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-553 Area Code & Prefix

(312) 553-0xxx
(312) 553-1xxx
(312) 553-2xxx
(312) 553-3xxx
(312) 553-4xxx
(312) 553-5xxx
(312) 553-6xxx
(312) 553-7xxx
(312) 553-8xxx
(312) 553-9xxx