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 4

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
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      
346-667 0 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-11-07   
346-667 1 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-11-07   
346-667 2 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-04-18   
346-667 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-11-07   
346-667 4 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-04-18   
346-667 5 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2020-11-07   
346-667 6 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-11-25   
346-667 7 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-01-09   
346-667 8 HSTNTXJAXBY  965H FRACTEL, LLC 560   2020-08-16   
346-667 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-01-09   
346-759 A HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 0 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 1 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 2 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 3 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 4 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 5 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 6 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 7 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 8 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
346-759 9 HSTNTX362MD  939H COMMIO, LLC 560   2024-02-23   
832-437 A HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560      
832-437 0 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2008-04-06   
832-437 1 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2008-08-07   
832-437 2 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2008-08-07   
832-437 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2009-08-15   
832-437 4 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2009-03-09   
832-437 5 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2009-03-09   
832-437 6 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2010-07-09   
832-437 7 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2012-12-22   
832-437 8 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2011-08-18   
832-437 9 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2011-09-30   
832-913 A HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560      
832-913 0 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2014-08-10   
832-913 1 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2015-04-20   
832-913 2 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2013-05-17   
832-913 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2014-09-05   
832-913 4 HSTOTX42DS2  7074 LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 560   2014-04-30   
832-913 5 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2014-10-23   
832-913 6 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2015-01-02   
832-913 7 HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560   2015-03-01   
832-913 8 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2015-07-20   
832-913 9 HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2015-07-30   

<< 1 2 3 4

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.