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: 1248 WINDSTREAM MONTEZUMA, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
641-501 A Montezuma IA MTZMIAXOPS0  632      
641-501 9 Montezuma IA MTZMIAXOPS0  632   2018-08-20   
641-595 A Deep River IA DPRVIAXORS0  632      
641-623 A Montezuma IA MTZMIAXOPS0  632      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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