920-488 phone numbers

Numbers 920-488-0000 to 920-488-9999 are assigned to Frontier North Inc. in Theresa, WI. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 920-488-7xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 920-488