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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-856 Area Code & Prefix

(312) 856-0xxx
(312) 856-1xxx
(312) 856-2xxx
(312) 856-3xxx
(312) 856-4xxx
(312) 856-5xxx
(312) 856-6xxx
(312) 856-7xxx
(312) 856-8xxx
(312) 856-9xxx