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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-820 Area Code & Prefix

(312) 820-0xxx
(312) 820-1xxx
(312) 820-2xxx
(312) 820-3xxx
(312) 820-4xxx
(312) 820-5xxx
(312) 820-6xxx
(312) 820-7xxx
(312) 820-8xxx
(312) 820-9xxx