← Area code 320
320-464 phone numbers
Numbers 320-464-0000 to 320-464-9999 are assigned to Onvoy, LLC in Cosmos, MN.
Not assigned to any carrier: 320-464-0xxx, 320-464-1xxx, 320-464-2xxx, 320-464-3xxx, 320-464-5xxx, 320-464-7xxx, 320-464-8xxx, 320-464-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.