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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OCN: 6274 UNITED STATES CELLULAR - WI

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
920-960 A Fond du Lac WI MILWWI12ZMD  356      
920-979 A Fond du Lac WI MILWWI12ZMD  356      
920-980 A Sheboygan WI MILWWI12ZMD  356      
920-984 0 Black Creek WI MNSHWIDQCM0  350   2008-09-11   
920-986 4 Shiocton WI MNSHWIDQCM0  350   2008-09-11   
920-988 A Watertown WI MILWWI12ZMD  356      
920-994 0 Random Lake WI MILWWI12ZMD  356   2022-08-28   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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