920-557 phone numbers

Numbers 920-557-0000 to 920-557-9999 are assigned to Teleport Communications America, LLC Wi in Beaver Dam, WI. 8 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 920-557-5xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 920-557