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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: HRLNTXHGXNX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-644 A Zapata TX 965H FRACTEL, LLC 568      
956-677 A Harlingen TX 965H FRACTEL, LLC 568      
956-733 A Weslaco TX 965H FRACTEL, LLC 568      
956-822 A Brownsville TX 965H FRACTEL, LLC 568      
956-833 A Mission TX 965H FRACTEL, LLC 568      
956-855 A McAllen TX 965H FRACTEL, LLC 568      
956-866 A Brownsville TX 965H FRACTEL, LLC 568      
956-877 A McAllen TX 965H FRACTEL, LLC 568      
956-899 A McAllen TX 965H FRACTEL, LLC 568      
956-922 A La Feria TX 965H FRACTEL, LLC 568      
956-933 A Mission TX 965H FRACTEL, LLC 568      
956-946 A Mission TX 965H FRACTEL, LLC 568      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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