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: HSTWTXBIDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-791 A Spring TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
713-554 A Houston TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
713-559 A Houston TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
713-929 A Houston TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-479 A Pinehurst TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-583 A Smithers Lake TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-586 A Richmond-Rosenberg TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-621 A Alvin TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-684 A Cypress TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-743 A Valley Lodge TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-793 A Splendora TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
832-843 A Tomball TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
936-309 A Waller TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
936-612 A Prairie View TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      
979-606 A Hempstead TX 7715 MATRIX TELECOM, LLC. S/I/I TNCI - TX 560      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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