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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-779 A Millville CA CHICCA017MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 724      
530-779 0 Millville CA CHICCA017MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 724      
530-779 2 Millville CA RDNGCA025MD  9262 UTILITY TELECOM GROUP, LLC - CA 724   2021-09-06   
530-779 4 Millville CA CHICCA017MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 724      
530-779 9 Millville CA CHICCA01XMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 724   2019-02-11   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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