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 Suburban, 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 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
346-680 7   903C ONVOY, LLC - TX 560   2023-10-14   
346-680 8   903C ONVOY, LLC - TX 560   2023-09-12   
346-680 9   903C ONVOY, LLC - TX 560   2023-09-12   
346-693 A HSTNTXJAXQY  490J DISH WIRELESS, LLC 560      
346-693 0   490J DISH WIRELESS, LLC 560   2024-01-23   
346-693 1   490J DISH WIRELESS, LLC 560   2023-12-05   
346-693 2   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-12-17   
346-693 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-12-17   
346-693 4   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-12-17   
346-693 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2023-12-17   
346-693 6   004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-03-14   
346-693 7   004F BANDWIDTH.COM CLEC, LLC - TX 560   2024-03-14   
346-693 8   903C ONVOY, LLC - TX 560   2023-11-11   
346-693 9   490J DISH WIRELESS, LLC 560   2023-11-10   
346-699 A HSTNTXJAXBY  965H FRACTEL, LLC 560      
346-699 0   903C ONVOY, LLC - TX 560   2021-08-20   
346-699 1   903C ONVOY, LLC - TX 560   2021-08-20   
346-699 2   903C ONVOY, LLC - TX 560   2021-07-17   
346-699 3   903C ONVOY, LLC - TX 560   2021-07-17   
346-699 4   903C ONVOY, LLC - TX 560   2021-07-17   
346-699 5   903C ONVOY, LLC - TX 560   2021-07-17   
346-699 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-03-09   
346-699 7   903C ONVOY, LLC - TX 560   2021-08-20   
346-699 8   903C ONVOY, LLC - TX 560   2021-08-20   
346-699 9   965H FRACTEL, LLC 560   2021-07-11   
346-744 A HSTNTXJAXBY  965H FRACTEL, LLC 560      
346-744 0   6701 AERIAL COMMUNICATIONS, INC. 560   2021-09-25   
346-744 1   6701 AERIAL COMMUNICATIONS, INC. 560   2021-09-25   
346-744 2   6701 AERIAL COMMUNICATIONS, INC. 560   2021-09-25   
346-744 3   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 4   965H FRACTEL, LLC 560   2021-09-24   
346-744 5   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 7   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2021-09-27   
346-744 9   6701 AERIAL COMMUNICATIONS, INC. 560   2021-09-25   
346-754 A HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560      
346-754 0   6701 AERIAL COMMUNICATIONS, INC. 560   2015-08-08   
346-754 1   6701 AERIAL COMMUNICATIONS, INC. 560   2015-08-08   
346-754 2   6701 AERIAL COMMUNICATIONS, INC. 560   2016-04-11   
346-754 3   6701 AERIAL COMMUNICATIONS, INC. 560   2016-04-11   
346-754 4   6701 AERIAL COMMUNICATIONS, INC. 560   2016-04-11   
346-754 5   318J COMCAST IP PHONE, LLC 560   2016-04-11   
346-754 6   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-09-15   
346-754 7   508J CENTURYLINK COMMUNICATIONS, LLC 560   2017-08-13   
346-754 8   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-08-06   
346-754 9   6701 AERIAL COMMUNICATIONS, INC. 560   2015-08-08   
346-773 A HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560      
346-773 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-04-12   
346-773 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2017-04-12   

<< 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 >>

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.