906-421 phone numbers

Numbers 906-421-0000 to 906-421-9999 are assigned to Peninsula Fiber Network, LLC (rate centre SKANDIA, MI, NANPA abbreviation). 4 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 906-421-5xxx, 906-421-6xxx, 906-421-7xxx, 906-421-8xxx, 906-421-9xxx — calls from these use spoofed caller IDs.

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 906-421