Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: OSHKWI01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-456 A Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 1 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 2 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 3 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 4 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 5 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 6 Oshkosh WI 9327 WISCONSIN BELL INC 350      
920-456 7 Oshkosh WI 9327 WISCONSIN BELL INC 350      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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