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.
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Switch: WTJTWIAA1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
262-354 A Oconomowoc WI 7421 AT&T - LOCAL 356      
262-354 6 Oconomowoc WI 7421 AT&T - LOCAL 356      
262-825 A Milwaukee Zone 2 WI 7421 AT&T - LOCAL 356      
262-825 9 Milwaukee Zone 2 WI 7421 AT&T - LOCAL 356      
262-865 A Racine WI 7421 AT&T - LOCAL 356      
414-446 6 Milwaukee Zone 4 WI 7421 AT&T - LOCAL 356   2007-03-22   
414-574 A Milwaukee Zone 5 WI 7421 AT&T - LOCAL 356      
414-574 2 Milwaukee Zone 5 WI 7421 AT&T - LOCAL 356      
414-574 7 Milwaukee Zone 5 WI 7421 AT&T - LOCAL 356   2011-01-21   
414-837 A Milwaukee Zone 1 WI 7421 AT&T - LOCAL 356      
414-837 2 Milwaukee Zone 1 WI 7421 AT&T - LOCAL 356      
414-897 A Milwaukee Zone 1 WI 7421 AT&T - LOCAL 356      
414-897 5 Milwaukee Zone 1 WI 7421 AT&T - LOCAL 356      
414-897 9 Milwaukee Zone 1 WI 7421 AT&T - LOCAL 356      
920-478 5 Waterloo WI 7421 AT&T - LOCAL 356   2003-08-06   
920-638 A Fond du Lac WI 7421 AT&T - LOCAL 356      
920-638 9 Fond du Lac WI 7421 AT&T - LOCAL 356      

Last updated: Sat, 25 Feb 2023 02:10:49 UTC

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