Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 350 [Rate centres in NPA 350] [Dial plan for NPA 350]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
350-251 A Oakdale CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-11-01   
350-251 0 Oakdale CA   649C ONVOY, LLC - CA 738   2026-04-05   
350-251 9 Oakdale CA   6010 NEW CINGULAR WIRELESS PCS, LLC 738   2025-11-01   

Last updated: Sat, 02 May 2026 12:20:53 UTC

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