← Area code 770
770-660 phone numbers
Numbers 770-660-0000 to 770-660-9999 are assigned to Onvoy, LLC (rate centre ATLANTA NW, GA, NANPA abbreviation).
Not assigned to any carrier: 770-660-1xxx, 770-660-2xxx, 770-660-3xxx, 770-660-4xxx, 770-660-5xxx, 770-660-6xxx, 770-660-7xxx, 770-660-8xxx, 770-660-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.