606-667 phone numbers

Numbers 606-667-0000 to 606-667-9999 are assigned to Onvoy, LLC in Dover, KY. 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 606-667-2xxx, 606-667-3xxx, 606-667-4xxx, 606-667-8xxx, 606-667-9xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 606-667