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: MILXWIILDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-266 4 Fond du Lac WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-340 3 Chilton WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-392 3 Beaver Dam WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-400 3 Plymouth WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-542 3 Fort Atkinson WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-545 2 Watertown WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-605 3 Jefferson WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-643 3 Horicon WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-657 3 Two Rivers WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-709 3 Juneau WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-860 8 Manitowoc WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
920-917 6 Sheboygan WI 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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