608-728 phone numbers

Numbers 608-728-0000 to 608-728-9999 are assigned to Teleport Communications America, LLC Wi in Janesville, WI. 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Not assigned to any carrier: 608-728-6xxx — calls from these use spoofed caller IDs.

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

Reported numbers in 608-728