← Area code 231
231-234 phone numbers
Numbers 231-234-0000 to 231-234-9999 are assigned to Charter Ip Enabled Services, LLC in Buckley, MI.
Not assigned to any carrier: 231-234-0xxx, 231-234-2xxx, 231-234-3xxx, 231-234-4xxx, 231-234-5xxx, 231-234-6xxx, 231-234-7xxx, 231-234-8xxx, 231-234-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.