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: IRNGTXXBXTY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
945-325 8 Plano TX 903C ONVOY, LLC - TX 552   2024-03-29   
945-325 9 Plano TX 903C ONVOY, LLC - TX 552   2024-03-29   
945-334 A Lewisville TX 903C ONVOY, LLC - TX 552   2024-04-22   
945-334 0 Lewisville TX 903C ONVOY, LLC - TX 552   2024-04-22   
945-334 1 Lewisville TX 903C ONVOY, LLC - TX 552   2024-04-23   
945-334 8 Lewisville TX 903C ONVOY, LLC - TX 552   2024-05-03   
945-335 A Irving TX 903C ONVOY, LLC - TX 552   2024-04-22   
945-335 0 Irving TX 903C ONVOY, LLC - TX 552   2024-04-22   
945-335 1 Irving TX 903C ONVOY, LLC - TX 552   2024-04-23   
945-335 8 Irving TX 903C ONVOY, LLC - TX 552   2024-04-23   
945-335 9 Irving TX 903C ONVOY, LLC - TX 552   2024-04-23   
945-356 5 Dallas Fort Worth Airport TX 903C ONVOY, LLC - TX 552   2021-06-28   
945-356 6 Dallas Fort Worth Airport TX 903C ONVOY, LLC - TX 552   2021-07-17   
945-387 0 Plano TX 903C ONVOY, LLC - TX 552   2025-09-27   
945-387 1 Plano TX 903C ONVOY, LLC - TX 552   2025-09-27   
945-404 A Carrollton TX 903C ONVOY, LLC - TX 552   2025-11-13   
945-404 0 Carrollton TX 903C ONVOY, LLC - TX 552   2025-11-13   
945-404 1 Carrollton TX 903C ONVOY, LLC - TX 552   2025-12-14   
945-404 3 Carrollton TX 903C ONVOY, LLC - TX 552   2026-06-13   
945-404 8 Carrollton TX 903C ONVOY, LLC - TX 552   2026-01-10   
945-404 9 Carrollton TX 903C ONVOY, LLC - TX 552   2026-01-10   
945-425 A Lewisville TX 903C ONVOY, LLC - TX 552      
945-425 0 Lewisville TX 903C ONVOY, LLC - TX 552   2024-02-17   
945-425 4 Lewisville TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-425 5 Lewisville TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-425 6 Lewisville TX 903C ONVOY, LLC - TX 552   2024-02-17   
945-425 8 Lewisville TX 903C ONVOY, LLC - TX 552   2023-07-06   
945-425 9 Lewisville TX 903C ONVOY, LLC - TX 552   2023-07-06   
945-428 A Plano TX 903C ONVOY, LLC - TX 552   2026-04-11   
945-428 0 Plano TX 903C ONVOY, LLC - TX 552   2026-04-11   
945-428 2 Plano TX 903C ONVOY, LLC - TX 552   2026-05-03   
945-428 3 Plano TX 903C ONVOY, LLC - TX 552   2026-05-03   
945-428 4 Plano TX 903C ONVOY, LLC - TX 552   2026-05-03   
945-428 5 Plano TX 903C ONVOY, LLC - TX 552   2026-05-03   
945-428 9 Plano TX 903C ONVOY, LLC - TX 552   2026-04-13   
945-440 7 Plano TX 903C ONVOY, LLC - TX 552   2026-07-20   
945-446 2 Carrollton TX 903C ONVOY, LLC - TX 552   2022-09-26   
945-446 3 Carrollton TX 903C ONVOY, LLC - TX 552   2022-09-26   
945-455 1 Irving TX 903C ONVOY, LLC - TX 552   2022-12-12   
945-455 2 Irving TX 903C ONVOY, LLC - TX 552   2022-12-12   
945-455 3 Irving TX 903C ONVOY, LLC - TX 552   2022-03-11   
945-455 4 Irving TX 903C ONVOY, LLC - TX 552   2022-03-11   
945-523 A Carrollton TX 903C ONVOY, LLC - TX 552      
945-523 2 Carrollton TX 903C ONVOY, LLC - TX 552   2023-05-22   
945-523 3 Carrollton TX 903C ONVOY, LLC - TX 552   2023-07-03   
945-523 4 Carrollton TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-523 5 Carrollton TX 903C ONVOY, LLC - TX 552   2023-03-16   
945-523 7 Carrollton TX 903C ONVOY, LLC - TX 552   2023-07-21   
945-800 1 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   
945-800 3 Plano TX 903C ONVOY, LLC - TX 552   2021-07-02   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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