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

NXX: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-240 A Santa Barbara CA   649C ONVOY, LLC - CA 740   2025-04-05   
820-240 0 Santa Barbara CA   649C ONVOY, LLC - CA 740   2025-04-05   
820-240 1 Santa Barbara CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-05-05   
820-240 7 Santa Barbara CA   649C ONVOY, LLC - CA 740   2025-05-10   
820-240 8 Santa Barbara CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2025-06-16   
820-240 9 Santa Barbara CA   649C ONVOY, LLC - CA 740   2025-05-10   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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