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: 252

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-252 A Arroyo Grande CA   649C ONVOY, LLC - CA 740   2026-11-08   
820-252 0 Arroyo Grande CA   649C ONVOY, LLC - CA 740   2026-11-08   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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