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: 874

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-874 A Williams CA YBCYCATU0MD  973E RACE TELECOMMUNICATIONS, INC. - CA 726      
530-874 1 Williams CA YBCYCATU0MD  973E RACE TELECOMMUNICATIONS, INC. - CA 726   2022-12-03   
530-874 2 Williams CA SCRMCA0133Z  6010 NEW CINGULAR WIRELESS PCS, LLC 726   2025-01-19   

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

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