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.

Switch: HSTNTXMOX6X

<< 1 2 3 4 5 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-553 1 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-08-12   
346-553 9 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-08-12   
346-560 8 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-08-26   
346-560 9 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-08-26   
346-566 1 Westfield TX 624H ONVOY SPECTRUM, LLC 560   2021-11-25   
346-566 8 Westfield TX 624H ONVOY SPECTRUM, LLC 560   2021-07-18   
346-596 A Humble TX 624H ONVOY SPECTRUM, LLC 560      
346-596 0 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 1 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 2 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 3 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 4 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 5 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 6 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 7 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 8 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 9 Humble TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-597 A Langham Creek TX 624H ONVOY SPECTRUM, LLC 560      
346-597 0 Langham Creek TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-597 6 Langham Creek TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-598 A Tomball TX 624H ONVOY SPECTRUM, LLC 560      
346-598 0 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-598 8 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-598 9 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-639 0 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2022-03-21   
346-640 A Langham Creek TX 624H ONVOY SPECTRUM, LLC 560      
346-640 3 Langham Creek TX 624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-642 7 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-06-19   
346-642 8 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-06-19   
346-643 7 Splendora TX 624H ONVOY SPECTRUM, LLC 560   2021-05-23   
346-643 8 Splendora TX 624H ONVOY SPECTRUM, LLC 560   2021-05-23   
346-655 7 Rosharon TX 624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-675 0 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2024-04-21   
346-675 1 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2024-04-21   
346-675 8 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2024-04-21   
346-676 7 Kemah TX 624H ONVOY SPECTRUM, LLC 560   2024-10-15   
346-688 2 Manvel TX 624H ONVOY SPECTRUM, LLC 560   2021-11-26   
346-688 3 Manvel TX 624H ONVOY SPECTRUM, LLC 560   2021-07-14   
346-706 4 Pinehurst TX 624H ONVOY SPECTRUM, LLC 560   2021-10-25   
346-706 8 Pinehurst TX 624H ONVOY SPECTRUM, LLC 560   2021-10-25   
346-706 9 Pinehurst TX 624H ONVOY SPECTRUM, LLC 560   2021-10-25   
346-746 5 Smithers Lake TX 624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-761 7 Satsuma TX 624H ONVOY SPECTRUM, LLC 560   2024-04-30   
346-761 8 Satsuma TX 624H ONVOY SPECTRUM, LLC 560   2024-03-20   
346-765 A Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 0 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 1 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 2 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 3 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 4 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 5 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 6 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-765 7 Tomball TX 624H ONVOY SPECTRUM, LLC 560   2024-03-11   
346-766 4 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-766 5 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-766 7 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
346-767 5 Stafford TX 624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-789 7 Channelview TX 624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-791 8 Humble TX 624H ONVOY SPECTRUM, LLC 560   2024-05-20   
346-791 9 Humble TX 624H ONVOY SPECTRUM, LLC 560   2024-05-20   
346-792 A Langham Creek TX 624H ONVOY SPECTRUM, LLC 560   2024-06-04   
346-792 0 Langham Creek TX 624H ONVOY SPECTRUM, LLC 560   2024-06-04   
346-829 0 Sugar Land TX 624H ONVOY SPECTRUM, LLC 560   2025-01-03   
346-866 3 Valley Lodge TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
346-866 4 Valley Lodge TX 624H ONVOY SPECTRUM, LLC 560   2021-07-14   
346-866 5 Valley Lodge TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
346-910 1 Mont Belvieu TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
346-910 2 Mont Belvieu TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
346-933 4 Richmond-Rosenberg TX 624H ONVOY SPECTRUM, LLC 560   2021-11-18   
346-933 5 Richmond-Rosenberg TX 624H ONVOY SPECTRUM, LLC 560   2021-11-18   
346-933 6 Richmond-Rosenberg TX 624H ONVOY SPECTRUM, LLC 560   2021-11-18   
346-966 7 Porter TX 624H ONVOY SPECTRUM, LLC 560   2021-07-14   
409-261 6 Galveston TX 624H ONVOY SPECTRUM, LLC 560   2021-07-08   
409-321 0 Galveston TX 624H ONVOY SPECTRUM, LLC 560   2023-12-11   
409-321 1 Galveston TX 624H ONVOY SPECTRUM, LLC 560   2023-12-11   
409-321 2 Galveston TX 624H ONVOY SPECTRUM, LLC 560   2023-12-11   
409-321 3 Galveston TX 624H ONVOY SPECTRUM, LLC 560   2023-12-11   
409-946 4 Port Bolivar TX 624H ONVOY SPECTRUM, LLC 560   2021-07-08   
409-946 7 Port Bolivar TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
409-946 8 Port Bolivar TX 624H ONVOY SPECTRUM, LLC 560   2021-12-04   
409-995 6 Texas City-La Marque TX 624H ONVOY SPECTRUM, LLC 560   2021-07-08   
713-262 6 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
713-262 7 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
713-399 A Houston TX 624H ONVOY SPECTRUM, LLC 560      
713-399 0 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 1 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 2 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 3 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 4 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 5 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 6 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 7 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 8 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-399 9 Houston TX 624H ONVOY SPECTRUM, LLC 560   2022-06-25   
713-431 1 Houston TX 624H ONVOY SPECTRUM, LLC 560   2020-07-07   
713-519 A Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560      
713-519 0 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-09-06   
713-519 1 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-09-06   
713-519 2 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-09-06   
713-519 3 Houston Suburban TX 624H ONVOY SPECTRUM, LLC 560   2023-09-06   

<< 1 2 3 4 5 >>

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.