920-203 Prefix — Oshkosh, Wisconsin

Phone numbers starting with 920-203 are based in Oshkosh, Wisconsin, primarily served by T-Mobile.

Recently looked-up numbers in 920-203

• 920-203-7860

More about this region

Area code 920 directory · About area code 920 · Get a WI phone number

Last updated: October 11, 2026