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: 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   2018-09-28   
346-367 1 Tomball TX 597F VOIP INNOVATIONS LLC 560   2019-02-18   
346-375 0 Sugar Land TX 597F VOIP INNOVATIONS LLC 560   2019-07-12   
346-381 A Houston Suburban TX 597F VOIP INNOVATIONS LLC 560      
346-381 1 Houston Suburban TX 597F VOIP INNOVATIONS LLC 560   2019-03-25   
346-382 A Spring TX 597F VOIP INNOVATIONS LLC 560      
346-382 1 Spring TX 597F VOIP INNOVATIONS LLC 560   2019-03-25   
832-400 2 Alvin TX 597F VOIP INNOVATIONS LLC 560   2019-07-13   
936-800 0 Nacogdoches TX 597F VOIP INNOVATIONS LLC 560   2020-07-03   
979-800 0 Garwood TX 597F VOIP INNOVATIONS LLC 560   2020-07-03   

Last updated: Tue, 04 May 2021 15:04:27 UTC

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