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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-639 Area Code & Prefix

(312) 639-0xxx
(312) 639-1xxx
(312) 639-2xxx
(312) 639-3xxx
(312) 639-4xxx
(312) 639-5xxx
(312) 639-6xxx
(312) 639-7xxx
(312) 639-8xxx
(312) 639-9xxx