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: HRLNTXHGXUX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-737 A Zapata TX 516J TON80 COMMUNICATIONS, LLC 568      
956-737 7 Zapata TX 516J TON80 COMMUNICATIONS, LLC 568   2022-06-05   
956-779 A Sullivan City TX 516J TON80 COMMUNICATIONS, LLC 568      
956-779 7 Sullivan City TX 516J TON80 COMMUNICATIONS, LLC 568   2022-06-05   
956-837 A Pharr TX 516J TON80 COMMUNICATIONS, LLC 568      
956-837 4 Pharr TX 516J TON80 COMMUNICATIONS, LLC 568   2022-06-05   
956-864 A Edcouch TX 516J TON80 COMMUNICATIONS, LLC 568      
956-864 3 Edcouch TX 516J TON80 COMMUNICATIONS, LLC 568   2022-06-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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