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: 275

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-275 A Redding CA CNVYCA11RS0  9740 PACIFIC BELL 724      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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