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: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-388 A Alta CA SCRLCAXXDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 726      
530-388 0 Alta CA WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2008-10-09   
530-388 1 Alta CA   515J IP HORIZON LLC 726   2002-10-12   
530-388 2 Alta CA   515J IP HORIZON LLC 726   2002-10-12   
530-388 4 Alta CA WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2022-12-04   
530-388 5 Alta CA SCRMCA01XXY  981E BANDWIDTH.COM CLEC, LLC - CA 726   2009-02-24   
530-388 6 Alta CA WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2011-11-25   
530-388 7 Alta CA SCRMCA01X7Z  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 726   2021-09-24   
530-388 8 Alta CA WSCRCAAHNMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 726   2005-11-08   
530-388 9 Alta CA SCRLCAXXDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 726      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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