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.
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Switch: PTLVTXXAIMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
361-250 2 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-250 3 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-284 1 Vanderbilt TX 903C ONVOY, LLC - TX 564   2023-09-18   
361-284 2 Vanderbilt TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-284 4 Vanderbilt TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-284 5 Vanderbilt TX 903C ONVOY, LLC - TX 564   2021-07-31   
361-286 0 Tivoli TX 903C ONVOY, LLC - TX 564   2023-09-18   
361-286 5 Tivoli TX 903C ONVOY, LLC - TX 564   2022-05-22   
361-286 6 Tivoli TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-286 8 Tivoli TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-365 A Port Lavaca TX 903C ONVOY, LLC - TX 564   2025-06-13   
361-365 3 Port Lavaca TX 903C ONVOY, LLC - TX 564   2025-06-13   
361-403 1 Palacios TX 903C ONVOY, LLC - TX 564   2024-01-11   
361-404 3 Palacios TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-404 4 Palacios TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-404 5 Palacios TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-408 1 Port O'Connor TX 903C ONVOY, LLC - TX 564   2024-01-11   
361-408 4 Port O'Connor TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-408 8 Port O'Connor TX 903C ONVOY, LLC - TX 564   2021-07-31   
361-482 4 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-11-25   
361-482 5 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-11-25   
361-551 6 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-553 0 Port Lavaca TX 903C ONVOY, LLC - TX 564   2023-09-11   
361-588 0 Blessing TX 903C ONVOY, LLC - TX 564   2021-05-28   
361-588 3 Blessing TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-588 4 Blessing TX 903C ONVOY, LLC - TX 564   2021-05-28   
361-588 8 Blessing TX 903C ONVOY, LLC - TX 564   2021-05-28   
361-785 7 Seadrift TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-787 7 Seadrift TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-789 7 Point Comfort TX 903C ONVOY, LLC - TX 564   2021-04-08   
361-789 8 Point Comfort TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-897 4 Bloomington TX 903C ONVOY, LLC - TX 564   2021-07-24   
361-897 6 Bloomington TX 903C ONVOY, LLC - TX 564   2021-04-04   
361-901 0 Port Lavaca TX 903C ONVOY, LLC - TX 564   2024-01-11   
361-901 2 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-10-23   
361-901 3 Port Lavaca TX 903C ONVOY, LLC - TX 564   2021-10-23   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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