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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-229 Area Code & Prefix

(312) 229-0xxx
(312) 229-1xxx
(312) 229-2xxx
(312) 229-3xxx
(312) 229-4xxx
(312) 229-5xxx
(312) 229-6xxx
(312) 229-7xxx
(312) 229-8xxx
(312) 229-9xxx