← Area code 507
507-604 phone numbers
Numbers 507-604-0000 to 507-604-9999 are assigned to Charter Ip Enabled Services, LLC in Lewiston, MN. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 507-604-7xxx, 507-604-8xxx, 507-604-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.