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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-257 A Houston TX HSTNTXJADS1  9533 SOUTHWESTERN BELL 560      
713-257 0 Houston TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
713-257 1 Houston TX HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
713-257 2 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-257 3 Houston TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-257 4 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-257 5 Houston TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
713-257 6 Houston TX HSTNTXJADS1  9533 SOUTHWESTERN BELL 560      
713-257 7 Houston TX HSTNTXJADS1  9533 SOUTHWESTERN BELL 560      
713-257 8 Houston TX HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      
713-257 9 Houston TX HSTNTXGI1MD  004F BANDWIDTH.COM CLEC, LLC - TX 560      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.