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: 389

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-389 A Alta CA DTFLCA11RS0  9740 PACIFIC BELL 726      
530-389 0 Alta CA   981E BANDWIDTH.COM CLEC, LLC - CA 726   2021-08-13   
530-389 1 Alta CA   9740 PACIFIC BELL 726      
530-389 2 Alta CA   9740 PACIFIC BELL 726      
530-389 3 Alta CA   649C ONVOY, LLC - CA 726   2011-09-26   
530-389 4 Alta CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 726   2005-07-10   
530-389 5 Alta CA   649C ONVOY, LLC - CA 726   2012-12-30   
530-389 6 Alta CA   649C ONVOY, LLC - CA 726   2016-04-22   
530-389 7 Alta CA   649C ONVOY, LLC - CA 726   2010-07-15   
530-389 8 Alta CA   9740 PACIFIC BELL 726      
530-389 9 Alta CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 726   2022-02-20   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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