Area Code 920

You can increase your connection rate up to 30% by dialing from a local number.

Local Presence by Tenfold gives you one-click access from your existing phone system to a local number in the US area code 920 and more than 200 others.

Reach out to customers in Green Bay, Appleton, Racine, Fond du Lac, Oshkosh, and Sheboygan.

Source: Wikipedia