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: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 809

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-809 A Harlingen TX HRLNTXDU9MD  321J HD CARRIER LLC 568      
956-809 8 Harlingen TX HRLNTXDU9MD  321J HD CARRIER LLC 568   2023-05-11   
956-809 9 Harlingen TX HRLNTXDU9MD  321J HD CARRIER LLC 568   2023-05-11   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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