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: 550

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-550 A Houston TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 0 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 1 Houston TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 2 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 3 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 4 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 5 Houston TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 6 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 7 Houston TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. 560   2003-07-12   
713-550 8 Houston TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
713-550 9 Houston TX HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.