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PHONE NUMBER PREFIXES IN THE 312 AREA CODE

Thousand digits 312-544 Area Code & Prefix

(312) 544-0xxx
(312) 544-1xxx
(312) 544-2xxx
(312) 544-3xxx
(312) 544-4xxx
(312) 544-5xxx
(312) 544-6xxx
(312) 544-7xxx
(312) 544-8xxx
(312) 544-9xxx