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: 903

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-903 A Baytown TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
713-903 0 Baytown TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2019-04-07   
713-903 1 Baytown TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2019-04-07   
713-903 2 Baytown TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2019-07-11   
713-903 3 Baytown TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2019-07-11   
713-903 4 Baytown TX HSTNTXMOX7X  318J COMCAST IP PHONE LLC 560   2019-03-21   
713-903 5 Baytown TX HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2019-07-09   
713-903 6 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2019-04-26   
713-903 7 Baytown TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2019-03-07   
713-903 8 Baytown TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2019-03-07   
713-903 9 Baytown TX HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS, INC. DBA T-MOBILE USA 560   2019-04-26   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.