Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-521 A Del Rey CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-521 0 Del Rey CA FRSNCA01XOY  649C ONVOY, LLC - CA 728      
559-521 1 Del Rey CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-08-13   
559-521 2 Del Rey CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2006-05-21   
559-521 3 Del Rey CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728   2018-06-21   
559-521 4 Del Rey CA FRSNCA01XXZ  145J TERRA NOVA TELECOM INC. 728   2023-06-24   
559-521 5 Del Rey CA FRSOCAYM4MD  6529 T-MOBILE USA, INC. 728   2007-05-03   
559-521 6 Del Rey CA FRSNCA01XNY  981E BANDWIDTH.COM CLEC, LLC - CA 728   2015-08-14   
559-521 7 Del Rey CA FRSNCA0104Z  506J TWILIO INTERNATIONAL, INC. 728   2021-08-30   
559-521 8 Del Rey CA FRSNCA01XUZ  624H ONVOY SPECTRUM, LLC 728   2024-01-11   
559-521 9 Del Rey CA FRSNCA01XOY  649C ONVOY, LLC - CA 728   2021-07-22   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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