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: HSTNTXYALMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-355 A Houston TX 597F VOIP INNOVATIONS, LLC 560      
346-355 0 Houston TX 597F VOIP INNOVATIONS, LLC 560      
346-367 1 Tomball TX 597F VOIP INNOVATIONS, LLC 560      
346-375 0 Sugar Land TX 597F VOIP INNOVATIONS, LLC 560      
346-381 A Houston Suburban TX 597F VOIP INNOVATIONS, LLC 560      
346-381 1 Houston Suburban TX 597F VOIP INNOVATIONS, LLC 560      
346-382 A Spring TX 597F VOIP INNOVATIONS, LLC 560      
346-382 1 Spring TX 597F VOIP INNOVATIONS, LLC 560      
832-400 2 Alvin TX 597F VOIP INNOVATIONS, LLC 560      
936-800 0 Nacogdoches TX 597F VOIP INNOVATIONS, LLC 560      
979-800 0 Garwood TX 597F VOIP INNOVATIONS, LLC 560      

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

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