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: IRNGTXXBXQY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
945-997 2 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 3 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 4 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 5 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 6 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 7 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 8 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
945-997 9 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-11-28   
972-312 3 Plano TX 624H ONVOY SPECTRUM, LLC 552   2021-12-17   
972-312 4 Plano TX 624H ONVOY SPECTRUM, LLC 552   2021-12-17   
972-312 5 Plano TX 624H ONVOY SPECTRUM, LLC 552   2021-12-17   
972-312 6 Plano TX 624H ONVOY SPECTRUM, LLC 552   2021-12-17   
972-312 7 Plano TX 624H ONVOY SPECTRUM, LLC 552   2021-12-17   
972-583 5 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-01-18   
972-583 7 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-01-18   
972-583 8 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-01-18   
972-583 9 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-01-18   
972-586 3 Dallas Fort Worth Airport EMS TX 624H ONVOY SPECTRUM, LLC 552   2022-05-23   
972-673 9 Plano TX 624H ONVOY SPECTRUM, LLC 552   2024-01-18   
972-688 0 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 1 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 2 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 3 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 4 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 5 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-688 7 Plano TX 624H ONVOY SPECTRUM, LLC 552   2022-01-22   
972-823 0 Irving TX 624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 4 Irving TX 624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 7 Irving TX 624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-823 8 Irving TX 624H ONVOY SPECTRUM, LLC 552   2025-10-20   
972-957 8 Irving TX 624H ONVOY SPECTRUM, LLC 552   2024-12-12   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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