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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-505 Area Code & Prefix

(312) 505-0xxx
(312) 505-1xxx
(312) 505-2xxx
(312) 505-3xxx
(312) 505-4xxx
(312) 505-5xxx
(312) 505-6xxx
(312) 505-7xxx
(312) 505-8xxx
(312) 505-9xxx