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: BELTWI01DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
608-361 A Beloit WI 9327 WISCONSIN BELL INC 354      
608-362 A Beloit WI 9327 WISCONSIN BELL INC 354      
608-363 A Beloit WI 9327 WISCONSIN BELL INC 354      
608-364 A Beloit WI 9327 WISCONSIN BELL INC 354      
608-365 A Beloit WI 9327 WISCONSIN BELL INC 354      
815-389 A South Beloit IL 9329 ILLINOIS BELL TEL CO 354      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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