← Area code 606
606-764 phone numbers
Numbers 606-764-0000 to 606-764-9999 are assigned to Onvoy, LLC (rate centre MT VERNON, KY, NANPA abbreviation).
Not assigned to any carrier: 606-764-0xxx, 606-764-2xxx, 606-764-3xxx, 606-764-4xxx, 606-764-5xxx, 606-764-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.