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: MRTWIAAQ3MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-354 7 Marshalltown IA 346F HEART OF IOWA VENTURES, L.L.C. - IA 632   2019-04-01   
641-473 6 Gladbrook IA 346F HEART OF IOWA VENTURES, L.L.C. - IA 632   2010-07-20   
641-479 3 Le Grand IA 346F HEART OF IOWA VENTURES, L.L.C. - IA 632   2009-03-23   
641-758 A Marshalltown IA 346F HEART OF IOWA VENTURES, L.L.C. - IA 632      
641-758 3 Marshalltown IA 346F HEART OF IOWA VENTURES, L.L.C. - IA 632   2009-03-21   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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