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: CDRRIADTFMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-229 A Waterloo IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-252 A Waterloo IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-323 A Oelwein IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-374 A Oran IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-383 A Iowa City IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-400 A Iowa City IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-512 A Iowa City IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-573 A Cedar Rapids IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-610 A Waterloo IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-693 A Cedar Rapids IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
319-855 A Iowa City IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
563-298 A Guttenberg IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
563-310 A Hawkeye IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
563-330 A Monona IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
563-352 A Clarence IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      
563-509 A Lime Springs IA 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 635      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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