← Area code 507
507-770 phone numbers
Numbers 507-770-0000 to 507-770-9999 are assigned to Mcc Telephony of Minnesota, LLC (rate centre SPRINGFLD, MN, NANPA abbreviation). 1 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 507-770-1xxx, 507-770-2xxx, 507-770-3xxx, 507-770-4xxx, 507-770-5xxx, 507-770-6xxx, 507-770-7xxx, 507-770-8xxx, 507-770-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.