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: MCALTX930MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-246 A Weslaco TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-255 A Edcouch TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-271 A Mission TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-329 A Edinburg TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-377 A Donna TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-465 A Brownsville TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-467 A McAllen TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      
956-622 A Harlingen TX 6114 LEVEL 3 COMMUNICATIONS, LLC - TX 568      

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

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