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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Yale, IA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
641-431 A CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-431 0 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-431 1 CNVLIABC1MD  6266 UNITED STATES CELLULAR - IA 632      
641-431 6 BOONIA01DS1  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 632      
641-431 8   6529 T-MOBILE USA, INC. 632      
641-439 A PANRIAXODS2  1271 PANORA COMMUNICATIONS COOPERATIVE 632      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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