← Area code 218
218-623 phone numbers
Numbers 218-623-0000 to 218-623-9999 are assigned to Onvoy, LLC in Duluth, MN.
Not assigned to any carrier: 218-623-0xxx, 218-623-2xxx, 218-623-3xxx, 218-623-4xxx, 218-623-8xxx, 218-623-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.