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.

Richmond-Rosenberg, TX

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
281-202 A HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
281-202 0 HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
281-202 1 HSTHTXENBMD  6664 SPRINT SPECTRUM L.P. 560   2009-03-17   
281-202 2 HSTHTXENBMD  6664 SPRINT SPECTRUM L.P. 560   2007-10-08   
281-202 3 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2009-11-11   
281-202 4 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2010-02-13   
281-202 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2008-11-09   
281-202 6 HSTOTX42DS0  7074 LEVEL 3 TELECOM OF TEXAS, LLC 560   2004-03-02   
281-202 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2008-07-12   
281-202 8 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-07-21   
281-202 9 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2008-10-05   
281-232 A RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-239 A RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-725 A RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560      
281-725 0 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-10-29   
281-725 1 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-10-29   
281-725 2 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-12-28   
281-725 3 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-12-28   
281-725 4 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2006-12-28   
281-725 5 RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560   2006-04-06   
281-725 6 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2006-12-28   
281-725 7 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-04-25   
281-725 8 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-04-25   
281-725 9 HSTQTXRG6MD  139F WORLDCALL INTERCONNECT INC. 560   2008-12-13   
281-750 A HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-750 0 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-750 1 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2003-12-09   
281-750 2 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2003-12-09   
281-750 3 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-750 4 HSTOTXORDS1  2091 ETS TELEPHONE COMPANY, INC. 560   2006-06-05   
281-750 5 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-10-12   
281-750 6 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2003-12-09   
281-750 7 HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-750 8 HSTWTXLKDS0  4911 IONEX COMMUNICATIONS SOUTH, INC. - TX 560   2004-01-03   
281-750 9 HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2008-02-15   
346-239 A HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS 560      
346-239 0 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS 560   2016-01-10   
346-239 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-01-11   
346-239 2 HSTNTXJAXSX  997G LOCAL ACCESS LLC - TX 560   2016-01-11   
346-239 3 RSBGTXRRDS0  9533 SOUTHWESTERN BELL 560   2016-02-24   
346-239 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-04-23   
346-239 5 HSTZTX16DS0  763H IP GLOBAL NETWORKS - TX 560   2016-04-16   
346-239 6 HSTNTXJAXSX  997G LOCAL ACCESS LLC - TX 560   2016-03-28   
346-239 7 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-03-28   
346-239 8 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2016-03-28   
346-239 9 HSTDTXBG9MD  6701 AERIAL COMMUNICATIONS 560   2016-01-10   
346-464 A   6701 AERIAL COMMUNICATIONS 560   2021-07-01   
346-464 0   6701 AERIAL COMMUNICATIONS 560   2021-07-01   
346-464 1   6701 AERIAL COMMUNICATIONS 560   2021-07-01   
346-464 2   6701 AERIAL COMMUNICATIONS 560   2021-07-01   

1 2 3 4 5 6 7 >>

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.