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.

Tomball, TX

1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
281-205 A HSTNTXGIDS0  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
281-205 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2005-01-17   
281-205 1   903C ONVOY, LLC - TX 560   2003-10-28   
281-205 2   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2003-09-23   
281-205 3   903C ONVOY, LLC - TX 560   2011-11-21   
281-205 4   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2002-05-08   
281-205 5   829J PAETEC ITEL, LLC 560   2011-09-19   
281-205 6   9533 SOUTHWESTERN BELL 560   2013-05-04   
281-205 7   318J COMCAST IP PHONE, LLC 560   2011-09-30   
281-205 8   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2012-09-16   
281-205 9   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560      
281-251 A TBLLTXKLDS0  9533 SOUTHWESTERN BELL 560      
281-255 A TBLLTXTBDS0  9533 SOUTHWESTERN BELL 560      
281-257 A TBLLTXKLDS0  9533 SOUTHWESTERN BELL 560      
281-516 A TBLLTXTBDS0  9533 SOUTHWESTERN BELL 560      
281-516 0   9533 SOUTHWESTERN BELL 560      
281-516 1   9533 SOUTHWESTERN BELL 560      
281-516 2   9533 SOUTHWESTERN BELL 560      
281-516 3   9533 SOUTHWESTERN BELL 560      
281-516 4   9533 SOUTHWESTERN BELL 560      
281-516 5   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-09-03   
281-516 6   7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2003-11-09   
281-516 7   9533 SOUTHWESTERN BELL 560      
281-516 8   004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-03-15   
281-516 9   9533 SOUTHWESTERN BELL 560      
281-547 A   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2025-04-07   
281-547 0   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2008-02-13   
281-547 1   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-547 2   004F BANDWIDTH.COM CLEC, LLC - TX 560   2020-11-12   
281-547 3   004F BANDWIDTH.COM CLEC, LLC - TX 560   2020-11-12   
281-547 4   004F BANDWIDTH.COM CLEC, LLC - TX 560   2020-11-12   
281-547 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-04-09   
281-547 6   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
281-547 7   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2008-02-13   
281-547 8   516C AT&T CORP. 560   2006-07-07   
281-547 9   624H ONVOY SPECTRUM, LLC 560   2024-10-15   
281-803 A HSTNTXCLX5Y  7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 0   7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 1   7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 2   7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 3   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560   2007-07-21   
281-803 4   7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 5   903C ONVOY, LLC - TX 560   2004-09-13   
281-803 6   7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2010-08-20   
281-803 7   7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 560      
281-803 8   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
281-803 9   004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-03-15   
281-826 A TBLLTXKLDS0  9533 SOUTHWESTERN BELL 560      
281-826 0   9533 SOUTHWESTERN BELL 560      
281-826 1   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-03-11   
281-826 2   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-03-11   
281-826 3   516C AT&T CORP. 560   2009-09-29   
281-826 4   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-03-11   
281-826 5   829J PAETEC ITEL, LLC 560   2008-07-13   
281-826 6   004F BANDWIDTH.COM CLEC, LLC - TX 560   2010-10-29   
281-826 7   9533 SOUTHWESTERN BELL 560   2008-07-19   
281-826 8   9533 SOUTHWESTERN BELL 560   2008-07-19   
281-826 9   004F BANDWIDTH.COM CLEC, LLC - TX 560   2013-03-15   
346-225 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-225 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-225 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-08-21   
346-236 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-236 0   903C ONVOY, LLC - TX 560   2016-07-29   
346-236 1   004F BANDWIDTH.COM CLEC, LLC - TX 560   2016-08-15   
346-236 2   7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2016-10-14   
346-236 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-29   
346-236 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-29   
346-236 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-11   
346-236 6   318J COMCAST IP PHONE, LLC 560   2016-06-19   
346-236 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-11   
346-236 8   516C AT&T CORP. 560   2016-09-12   
346-236 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-06-18   
346-246 A TBLLTXKLDS0  9533 SOUTHWESTERN BELL 560      
346-246 0   004F BANDWIDTH.COM CLEC, LLC - TX 560   2017-06-09   
346-246 1   073H TELNYX LLC 560   2017-06-07   
346-246 2   903C ONVOY, LLC - TX 560   2017-06-30   
346-246 3   004F BANDWIDTH.COM CLEC, LLC - TX 560   2017-09-03   
346-246 4   004F BANDWIDTH.COM CLEC, LLC - TX 560   2017-09-03   
346-246 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-10-14   
346-246 6   9533 SOUTHWESTERN BELL 560   2017-04-26   
346-246 7   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2017-10-02   
346-246 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-08-06   
346-246 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-08-06   
346-273 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-273 0   903C ONVOY, LLC - TX 560   2017-12-21   
346-273 1   903C ONVOY, LLC - TX 560   2017-12-21   
346-273 2   903C ONVOY, LLC - TX 560   2018-04-26   
346-273 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-08-12   
346-273 4   004F BANDWIDTH.COM CLEC, LLC - TX 560   2018-05-14   
346-273 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-06-09   
346-273 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-04-14   
346-273 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-12-23   

1 2 3 4 >>

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.