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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Switch: WCFLTXNIXGX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
940-217 A Wichita Falls TX 551G NUSO, LLC 548      
940-217 1 Wichita Falls TX 551G NUSO, LLC 548   2013-05-02   
940-285 3 Wichita Falls TX 551G NUSO, LLC 548   2018-03-07   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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