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.

Katy, TX

<< 1 2 3 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
281-769 A HSTGTX05AMD  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
281-769 0 HSTGTX05AMD  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
281-769 1 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2013-09-08   
281-769 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2007-12-05   
281-769 3 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-01-10   
281-769 4 HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2008-01-31   
281-769 5 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2012-08-01   
281-769 6 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-08-22   
281-769 7 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2011-06-19   
281-769 8 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2008-06-19   
281-769 9 KATYTXXADS1  2072 CONSOLIDATED COMMUNICATIONS OF TEXAS COMPANY 560   2012-05-13   
346-257 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-257 0   515J IP HORIZON LLC 560   2017-07-14   
346-257 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-08-30   
346-257 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2017-07-06   
346-257 3 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-08-30   
346-257 4 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2018-07-03   
346-257 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-10-29   
346-257 6 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2017-10-14   
346-257 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-09-01   
346-257 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-01-21   
346-257 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2018-01-21   
346-307 A HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560      
346-307 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 3 HSTOTX46DS0  7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2015-10-03   
346-307 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 6 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-11-03   
346-307 7 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2016-01-18   
346-307 8 HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2016-01-14   
346-307 9 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2016-01-22   
346-387 A HSTOTXORDS1  2091 ETS TELEPHONE COMPANY, INC. 560      
346-387 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-23   
346-387 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-23   
346-387 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-23   
346-387 3 HSTNTXJAX8Z  792K CHARTER IP ENABLED SERVICES, LLC 560   2016-07-23   
346-387 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-23   
346-387 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2016-09-23   
346-387 6 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2016-04-10   
346-387 7 HSTOTXORDS1  2091 ETS TELEPHONE COMPANY, INC. 560   2016-04-09   
346-387 8 HSTOTXORDS1  2091 ETS TELEPHONE COMPANY, INC. 560   2016-04-09   
346-387 9 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2016-11-10   
346-457 A HSTNTXYAPMD  495J STRATUS NETWORKS 560      
346-457 0 HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 1 HSTNTXYAPMD  495J STRATUS NETWORKS 560   2021-05-07   
346-457 2 HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 3 HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 4 HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 5 HSTNTX362MD  939H COMMIO, LLC 560   2021-06-05   
346-457 6 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2022-01-22   
346-457 7 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2021-08-30   
346-457 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-06   
346-457 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-06   
346-527 A KATYTXXA9MD  903C ONVOY, LLC - TX 560      
346-527 0 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-01-21   
346-527 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-02-05   
346-527 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-02-05   
346-527 3 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-02-05   
346-527 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-02-05   
346-527 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-02-05   
346-527 6 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-527 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-01-29   
346-527 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-01-29   
346-527 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-01-29   
346-608 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-608 0 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-608 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-04-02   
346-608 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2023-02-07   
346-608 3 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-04-02   
346-608 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-04-02   
346-608 5 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-04-02   
346-608 6 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-04-02   
346-608 7 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-02-08   
346-608 8 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-02-08   
346-608 9 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-615 A KATYTXXA9MD  903C ONVOY, LLC - TX 560      
346-615 0 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-09-17   
346-615 1 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-615 2 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-07-15   
346-615 3 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-03-10   
346-615 4 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2023-03-10   
346-615 5 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-615 6 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-615 7 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-02-22   
346-615 8 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-05-20   
346-615 9 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2024-06-29   
346-637 A HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560      
346-637 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-637 1 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 2 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 3 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 4 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 5 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 6 KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 7 HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560   2022-03-17   
346-637 8 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-637 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-667 A HSTNTXJAXBY  965H FRACTEL, LLC 560      

<< 1 2 3 >>

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.