231-771 phone numbers

Numbers 231-771-0000 to 231-771-9999 are assigned to Onvoy, Llcv in Elk Rapids, MI. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 231-771-6xxx, 231-771-7xxx, 231-771-8xxx, 231-771-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 231-771