231-407 phone numbers

Numbers 231-407-0000 to 231-407-9999 are assigned to Onvoy, Llcv in Mecosta, MI.

Not assigned to any carrier: 231-407-1xxx, 231-407-2xxx, 231-407-3xxx, 231-407-4xxx, 231-407-5xxx, 231-407-6xxx, 231-407-8xxx, 231-407-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 231-407