Area Codes
| 920 | Wisconsin (Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Fond Du Lac and eastern Wisconsin) | More information at: Area Code 920 Phone Number Blocks
| 920 | Wisconsin (Appleton, Sheboygan, Oshkosh, Green Bay, Manitowoc, Fond Du Lac and eastern Wisconsin) | More information at: Area Code 920 Phone Number Blocks