Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-233 A Alturas CA ALTRCAXFDS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      

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

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