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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Switch: CDRRIADTUMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-251 A Anamosa IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635      
319-251 6 Anamosa IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2017-06-16   
319-284 7 Oelwein IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2019-10-07   
319-332 6 Independence IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2012-03-12   
319-423 A Cedar Rapids IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635      
319-423 6 Cedar Rapids IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2010-06-28   
319-458 6 Washington IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2020-03-08   
319-499 6 Iowa City IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2012-05-01   
319-505 6 Waterloo IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2013-03-01   
319-559 6 Waverly IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2013-05-15   
319-645 6 Tiffin IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2020-01-31   
319-775 6 Cedar Rapids IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2018-12-03   
319-859 6 Cedar Falls IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2014-11-21   
563-334 6 Decorah IA 8344 TELEPORT COMMUNICATIONS AMERICA, LLC - IA 635   2019-03-30   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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