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: 766

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-766 A Houston TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
713-766 0 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
713-766 1 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
713-766 2 Houston TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
713-766 3 Houston TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
713-766 4 Houston TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
713-766 5 Houston TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
713-766 6 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
713-766 7 Houston TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560      
713-766 8 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
713-766 9 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.