← Area code 320
320-383 phone numbers
Numbers 320-383-0000 to 320-383-9999 are assigned to Citizens Telecom Co Mn-Frontier Citizens Com-Mn in Hazel Run, MN. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.