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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-439 Area Code & Prefix

(312) 439-0xxx
(312) 439-1xxx
(312) 439-2xxx
(312) 439-3xxx
(312) 439-4xxx
(312) 439-5xxx
(312) 439-6xxx
(312) 439-7xxx
(312) 439-8xxx
(312) 439-9xxx