Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 738

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-738 A Avalon CA ANHMCA01XEY  516C AT&T CORP. 730      
424-738 0 Avalon CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-01-09   
424-738 1 Avalon CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-05-27   
424-738 2 Avalon CA   9262 UTILITY TELECOM GROUP, LLC - CA 730   2012-06-23   
424-738 3 Avalon CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2012-06-16   
424-738 4 Avalon CA   649C ONVOY, LLC - CA 730   2012-12-30   
424-738 5 Avalon CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2013-03-25   
424-738 6 Avalon CA   649C ONVOY, LLC - CA 730   2013-12-02   
424-738 7 Avalon CA   516C AT&T CORP. 730   2010-01-28   
424-738 8 Avalon CA   649C ONVOY, LLC - CA 730   2011-03-04   
424-738 9 Avalon CA   649C ONVOY, LLC - CA 730   2010-12-10   

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

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