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: HSTNTXJAXWY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
713-853 3 Houston TX 732J NUSO, LLC 560   2024-11-10   
832-390 6 Houston TX 732J NUSO, LLC 560   2024-12-03   
832-426 8 Houston TX 732J NUSO, LLC 560   2024-11-10   
936-340 6 Dayton TX 732J NUSO, LLC 560   2023-11-24   
936-341 A Dayton TX 732J NUSO, LLC 560      
936-341 1 Dayton TX 732J NUSO, LLC 560   2023-01-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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