← Area code 507
507-492 phone numbers
Numbers 507-492-0000 to 507-492-9999 are assigned to Onvoy, LLC (rate centre MADISON LK, MN, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 507-492-0xxx, 507-492-2xxx, 507-492-3xxx, 507-492-5xxx, 507-492-6xxx, 507-492-8xxx, 507-492-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.