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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NPA: 402 [Rate centres in NPA 402] [Dial plan for NPA 402]

NXX: 974

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
402-974 A South Gregory NE WNNRSDXADS1  1686 VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS 640      
402-974 8 South Gregory NE WNNRSDXADS1  1686 VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS 640      
402-974 9 South Gregory NE WNNRSDXADS1  1686 VIVIAN TEL CO DBA GOLDEN WEST TELECOMMUNICATIONS 640      

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

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