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: SNDGCA0260Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
858-858 4 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-858 5 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-858 6 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-858 7 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-858 8 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-858 9 San Diego: San Diego DA CA 624H ONVOY SPECTRUM, LLC 732   2023-07-24   
858-933 0 Del Mar CA 624H ONVOY SPECTRUM, LLC 732   2021-11-20   
858-944 8 San Diego: Linda Vista DA CA 624H ONVOY SPECTRUM, LLC 732   2021-11-18   
858-946 9 Rancho Bernardo CA 624H ONVOY SPECTRUM, LLC 732   2024-01-04   
858-955 3 Pine Valley CA 624H ONVOY SPECTRUM, LLC 732   2021-11-08   
858-955 4 Pine Valley CA 624H ONVOY SPECTRUM, LLC 732   2021-11-08   
858-955 6 Pine Valley CA 624H ONVOY SPECTRUM, LLC 732   2021-07-19   

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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