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: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-855 A Avalon CA LSANCAJWIMD  965H FRACTEL, LLC 730      
424-855 0 Avalon CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-08-13   
424-855 1 Avalon CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2022-08-13   
424-855 5 Avalon CA LSANCAJWIMD  965H FRACTEL, LLC 730   2022-07-11   
424-855 8 Avalon CA LSANCARC32Z  073H TELNYX LLC 730   2023-05-27   
424-855 9 Avalon CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2022-07-22   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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