660-667 phone numbers

Numbers 660-667-0000 to 660-667-9999 are assigned to Onvoy, LLC in Lexington, MO. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 660-667-1xxx, 660-667-3xxx, 660-667-4xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 660-667