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: 1640 ARMOUR INDEPENDENT TEL CO DBA GOLDEN WEST TELCOMM

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-296 A Canistota SD DLRPSDXA0MD  640      
605-724 A Armour SD DLRPSDXA0MD  640      
605-729 A Bridgewater SD DLRPSDXA0MD  640      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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