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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-631 Area Code & Prefix

(312) 631-0xxx
(312) 631-1xxx
(312) 631-2xxx
(312) 631-3xxx
(312) 631-4xxx
(312) 631-5xxx
(312) 631-6xxx
(312) 631-7xxx
(312) 631-8xxx
(312) 631-9xxx