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: UNINIAXODS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
641-366 A Conrad IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-474 A Green Mountain IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-475 A Haverhill IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-476 A Laurel IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-478 A Ferguson IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-486 A Union IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-488 A Albion IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-496 A Liscomb IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-497 A New Providence IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-858 A Eldora IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-868 A Steamboat Rock IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-920 A Steamboat Rock IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-922 A Conrad IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      
641-939 A Eldora IA 1297 HEART OF IOWA COMMUNICATIONS COOPERATIVE - IA 632      

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

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