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: 675

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-675 A Challenge CA CHLNCA11RS0  9740 PACIFIC BELL 724      
530-675 0 Challenge CA   9740 PACIFIC BELL 724      
530-675 1 Challenge CA   9740 PACIFIC BELL 724      
530-675 2 Challenge CA   9740 PACIFIC BELL 724      
530-675 3 Challenge CA   9740 PACIFIC BELL 724      
530-675 4 Challenge CA   981E BANDWIDTH.COM CLEC, LLC - CA 724   2009-02-23   
530-675 5 Challenge CA   649C ONVOY, LLC - CA 724   2016-03-05   
530-675 6 Challenge CA   981E BANDWIDTH.COM CLEC, LLC - CA 724   2015-05-25   
530-675 8 Challenge CA   649C ONVOY, LLC - CA 724   2020-03-02   
530-675 9 Challenge CA   9740 PACIFIC BELL 724      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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