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.

Houston, TX

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
346-739 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2023-12-31   
346-739 8 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2023-12-22   
346-739 9 HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-741 A HSTNTXJAX1Z  839J EON TELECOM, INC. 560   2024-01-18   
346-741 0 HSTNTX362MD  939H COMMIO, LLC 560   2024-01-19   
346-741 1 HSTNTXJAX1Z  839J EON TELECOM, INC. 560   2024-01-18   
346-741 2 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-01-24   
346-741 3 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-03-23   
346-741 4 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-06-21   
346-741 5 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-03-14   
346-741 6 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-03-14   
346-741 7 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-03-14   
346-741 8 HSTNTX362MD  939H COMMIO, LLC 560   2024-01-19   
346-741 9 HSTNTX362MD  939H COMMIO, LLC 560   2024-01-19   
346-766 A HSTNTXJAXBY  965H FRACTEL, LLC 560      
346-766 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2020-04-27   
346-766 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2020-04-27   
346-766 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2020-08-28   
346-766 3   965H FRACTEL, LLC 560   2019-07-17   
346-766 4 HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-766 5 HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-766 6   965H FRACTEL, LLC 560   2019-07-17   
346-766 7 HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-766 8 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2020-08-28   
346-766 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2020-09-07   
346-771 A HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 1 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 2 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 3 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 5 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 6 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 7 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 8 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-771 9 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-03-30   
346-772 A HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560      
346-772 0 HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2015-10-23   
346-772 1 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2015-10-17   
346-772 2 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2015-10-17   
346-772 3 HSTQTX02DS4  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 560   2015-10-17   
346-772 4 HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2015-10-23   
346-772 5 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-18   
346-772 6 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-18   
346-772 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-18   
346-772 8 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-18   
346-772 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2015-10-18   
346-775 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-775 0 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 1 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 2 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 3 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 4 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 5 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 6 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 7 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 8 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-775 9 HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2016-01-08   
346-781 A HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-04-21   
346-781 0 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-04-21   
346-781 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-04-21   
346-781 2 HSTNTXYATMD  732J NUSO, LLC 560   2024-04-22   
346-781 3 HSTNTXYATMD  732J NUSO, LLC 560   2024-04-22   
346-781 4 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-781 5 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-781 6 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-781 7 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-781 8 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-781 9 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-04-22   
346-800 A HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-800 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-05-25   
346-800 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-05-26   
346-800 2 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-05-26   
346-800 3 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-05-26   
346-800 4 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-05-26   
346-800 5 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-05-26   
346-800 6 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-05-26   
346-800 7 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2015-05-26   
346-800 8 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-05-25   
346-800 9 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2015-05-25   
346-802 A HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560      
346-802 0 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2015-08-02   
346-802 1 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2015-08-02   
346-802 2 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2016-03-22   
346-802 3 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2017-08-01   
346-802 4 HSTNTXMOX7X  318J COMCAST IP PHONE, LLC 560   2017-08-01   
346-802 5 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2016-03-23   
346-802 6 HSTNTX01MMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 560   2016-03-22   
346-802 7 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2016-03-30   
346-802 8 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2016-04-01   
346-802 9 HSTWTXUFAMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 560   2015-08-02   
346-809 A HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-06-20   
346-809 0 HSTNTXYADS5  903C ONVOY, LLC - TX 560   2024-06-20   
346-809 1 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-06-21   
346-809 2 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-06-21   
346-809 3 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-06-21   
346-809 4 HSTNTXGI0MD  004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-06-21   
346-809 5 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-07-03   
346-809 6 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-07-03   
346-809 7 HSTNTXJAXQY  490J DISH WIRELESS, LLC 560   2024-08-07   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.