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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-770 Area Code & Prefix

(312) 770-0xxx
(312) 770-1xxx
(312) 770-2xxx
(312) 770-3xxx
(312) 770-4xxx
(312) 770-5xxx
(312) 770-6xxx
(312) 770-7xxx
(312) 770-8xxx
(312) 770-9xxx