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: MILWWI12XBY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-814 A Sheboygan WI 520K TDS METROCOM, LLC 356      
920-814 1 Sheboygan WI 520K TDS METROCOM, LLC 356   2023-05-14   
920-816 A Manitowoc WI 520K TDS METROCOM, LLC 356      
920-816 2 Manitowoc WI 520K TDS METROCOM, LLC 356   2023-06-01   
920-817 3 Fort Atkinson WI 520K TDS METROCOM, LLC 356   2023-05-30   
920-913 A Fond du Lac WI 520K TDS METROCOM, LLC 356      

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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