← Area code 320
320-401 phone numbers
Numbers 320-401-0000 to 320-401-9999 are assigned to Charter Ip Enabled Services, LLC in Maple Lake, MN. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 320-401-3xxx, 320-401-5xxx, 320-401-6xxx, 320-401-7xxx, 320-401-8xxx, 320-401-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.