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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-421 A Knights Landing CA SCRMCA01XXY  981E BANDWIDTH.COM CLEC, LLC - CA 726      
530-421 0 Knights Landing CA   649C ONVOY, LLC - CA 726      
530-421 1 Knights Landing CA   073H TELNYX LLC 726   2019-10-10   
530-421 2 Knights Landing CA   981E BANDWIDTH.COM CLEC, LLC - CA 726      
530-421 3 Knights Landing CA   485E ASTOUND BROADBAND, LLC - CA 726   2018-03-13   
530-421 6 Knights Landing CA   649C ONVOY, LLC - CA 726   2012-12-31   
530-421 8 Knights Landing CA   981E BANDWIDTH.COM CLEC, LLC - CA 726   2009-02-24   
530-421 9 Knights Landing CA   981E BANDWIDTH.COM CLEC, LLC - CA 726   2015-08-13   

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

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