← Area code 312
312-314 phone numbers
Numbers 312-314-0000 to 312-314-9999 are assigned to New Cingular Wireless PCS, LLC in Hinsdale, IL.
Not assigned to any carrier: 312-314-1xxx, 312-314-2xxx, 312-314-3xxx, 312-314-4xxx, 312-314-5xxx, 312-314-6xxx, 312-314-7xxx, 312-314-8xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.