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: 938D WINDSTREAM IT-COMM, LLC - IA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
319-720 A Cedar Rapids IA CDRRIAXX3MD  635      
319-720 1 Cedar Rapids IA CDRRIAXX3MD  635   2009-02-13   
319-855 6 Iowa City IA CDRRIAXX3MD  635   2009-03-24   
515-421 A Des Moines IA KNVLIAXCPS0  632      
515-421 1 Des Moines IA KNVLIAXCPS0  632   2011-02-03   
515-612 A Des Moines IA NEVDIAXCDS0  632      
515-612 1 Des Moines IA NEVDIAXCDS0  632   2011-02-03   
515-954 A Des Moines IA KNVLIAXCPS0  632      
515-954 1 Des Moines IA KNVLIAXCPS0  632   2009-02-13   
563-275 A Davenport IA DVNPIA80FMD  634      
563-275 1 Davenport IA DVNPIA80FMD  634   2010-03-13   
712-828 A Council Bluffs IA LOGNIAXO5MD  644      

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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