Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 341 [Rate centres in NPA 341] [Dial plan for NPA 341]

NXX: 264

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
341-264 A Oakland: Main-Piedmont DA CA   649C ONVOY, LLC - CA 722   2025-11-23   
341-264 0 Oakland: Main-Piedmont DA CA   649C ONVOY, LLC - CA 722   2025-11-23   
341-264 1 Oakland: Main-Piedmont DA CA   649C ONVOY, LLC - CA 722   2025-11-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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