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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-440 Area Code & Prefix

(312) 440-0xxx
(312) 440-1xxx
(312) 440-2xxx
(312) 440-3xxx
(312) 440-4xxx
(312) 440-5xxx
(312) 440-6xxx
(312) 440-7xxx
(312) 440-8xxx
(312) 440-9xxx