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: HRLNTXDU7MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
956-234 6 San Benito TX 145J TERRA NOVA TELECOM INC. 568      
956-339 9 Edinburg TX 145J TERRA NOVA TELECOM INC. 568      
956-535 6 Harlingen TX 145J TERRA NOVA TELECOM INC. 568      
956-577 9 Harlingen TX 145J TERRA NOVA TELECOM INC. 568      
956-598 9 Mission TX 145J TERRA NOVA TELECOM INC. 568      
956-676 6 Brownsville TX 145J TERRA NOVA TELECOM INC. 568      
956-690 2 Raymondville TX 145J TERRA NOVA TELECOM INC. 568      
956-808 A Harlingen TX 145J TERRA NOVA TELECOM INC. 568      
956-828 8 McAllen TX 145J TERRA NOVA TELECOM INC. 568      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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