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: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-677 A Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-677 0 Houston TX HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2008-02-29   
713-677 1 Houston TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-677 2 Houston TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2017-08-08   
713-677 3 Houston TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-677 4 Houston TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-01-19   
713-677 5 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-677 6 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-677 7 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-677 8 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
713-677 9 Houston TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-18   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.