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: HSTNTXJAXXX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-330 7 Houston TX 156J RCLEC, INC. 560   2017-03-20   
346-353 2 Houston TX 156J RCLEC, INC. 560   2019-04-13   
346-980 4 Houston TX 156J RCLEC, INC. 560   2015-05-02   
832-930 A Houston TX 156J RCLEC, INC. 560      
832-930 4 Houston TX 156J RCLEC, INC. 560   2014-04-26   

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

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