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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-551 Area Code & Prefix

(312) 551-0xxx
(312) 551-1xxx
(312) 551-2xxx
(312) 551-3xxx
(312) 551-4xxx
(312) 551-5xxx
(312) 551-6xxx
(312) 551-7xxx
(312) 551-8xxx
(312) 551-9xxx