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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-678 Area Code & Prefix

(312) 678-0xxx
(312) 678-1xxx
(312) 678-2xxx
(312) 678-3xxx
(312) 678-4xxx
(312) 678-5xxx
(312) 678-6xxx
(312) 678-7xxx
(312) 678-8xxx
(312) 678-9xxx