Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 820 [Rate centres in NPA 820] [Dial plan for NPA 820]

NXX: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-242 A El Rio CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2025-11-09   
820-242 0 El Rio CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2025-11-09   
820-242 2 El Rio CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2025-11-28   
820-242 8 El Rio CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2026-07-16   

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

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