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.

NPA: 820 [Rate centres in NPA 820] [Dial plan for NPA 820]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-999 7 Oxnard CA LSANCAJW5MD  197D VONAGE AMERICA LLC 730   2020-06-18   
820-999 8 Oxnard CA LSANCAJW5MD  197D VONAGE AMERICA LLC 730   2020-06-18   
820-999 9 Oxnard CA LSANCAJWIMD  965H FRACTEL, LLC 730   2019-03-21   

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Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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