231-285 phone numbers

Numbers 231-285-0000 to 231-285-9999 are assigned to Omnipoint Communications Midwest Operations, LLC in Cadillac, MI. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 231-285-2xxx, 231-285-3xxx, 231-285-4xxx, 231-285-5xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 231-285