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: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-251 A Paso Robles CA   649C ONVOY, LLC - CA 740   2026-10-18   
820-251 0 Paso Robles CA   649C ONVOY, LLC - CA 740   2026-10-18   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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