← Area code 507
507-435 phone numbers
Numbers 507-435-0000 to 507-435-9999 are assigned to Frontier Communications of Minnesota, Inc. in Lewisville, MN. 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 507-435-0xxx, 507-435-7xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.