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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OCN: 6103 WINNEBAGO COOPERATIVE TELEPHONE ASSOCIATION - IA

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
515-646 4 Ledyard IA FRCYIAXR2MD  632      
641-243 7 Mason City IA MSCYIA601MD  632      
641-323 A Northwood IA NWODIA051MD  632      
641-323 7 Northwood IA NWODIA051MD  632      
641-454 4 Manly IA LJTPIA011MD  632      
641-585 A Forest City IA FRCYIAXR2MD  632      
641-863 7 Britt IA BRTTIA061MD  632      
641-924 7 Garner IA GRNRIA071MD  632      

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

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