Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 209 [Rate centres in NPA 209] [Dial plan for NPA 209]

NXX: 928

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
209-928 A Tuolumne CA TLMNCAXFDS0  2342 CITIZENS TELECOM DBA FRONTIER COMM OF TOULUMNE 738      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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