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: CDRRIADTNMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-284 A Oelwein IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-326 A Independence IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-405 A Anamosa IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-441 A Center Point IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-451 A Cedar Rapids IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-535 A Mount Vernon IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      
319-775 A Cedar Rapids IA 985E BANDWIDTH.COM CLEC, LLC - IA 635      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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