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: 247

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-247 A Newbury Park CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2026-04-11   
820-247 0 Newbury Park CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2026-04-11   
820-247 1 Newbury Park CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2026-07-05   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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