740-665 phone numbers

Numbers 740-665-0000 to 740-665-9999 are assigned to Onvoy, LLC in Gratiot, OH. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 740-665-2xxx, 740-665-3xxx, 740-665-4xxx, 740-665-6xxx, 740-665-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 740-665