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: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 384

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-384 A Afton WY CHYNWYRF2MD  939H COMMIO LLC 654   2022-01-02   
307-384 0 Afton WY CHYNWYRF2MD  939H COMMIO LLC 654   2022-01-02   
307-384 1 Afton WY CHYNWYRF2MD  939H COMMIO LLC 654   2022-01-02   

Last updated: Fri, 13 May 2022 22:16:13 UTC

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