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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-644 Area Code & Prefix

(312) 644-0xxx
(312) 644-1xxx
(312) 644-2xxx
(312) 644-3xxx
(312) 644-4xxx
(312) 644-5xxx
(312) 644-6xxx
(312) 644-7xxx
(312) 644-8xxx
(312) 644-9xxx