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.

NPA: 713 [Rate centres in NPA 713] [Dial plan for NPA 713]

NXX: 575

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-575 A Houston Suburban TX HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
713-575 0 Houston Suburban TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2011-04-08   
713-575 1 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2010-04-13   
713-575 2 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2010-04-13   
713-575 3 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2010-11-15   
713-575 4 Houston Suburban TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2011-04-08   
713-575 5 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2009-02-11   
713-575 6 Houston Suburban TX HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
713-575 7 Houston Suburban TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2011-04-08   
713-575 8 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2009-02-11   
713-575 9 Houston Suburban TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2011-09-07   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.