Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Los Angeles: DA 04, CA

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
323-342 5 LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-08-28   
323-342 6 LSANCA23DS0  9740 PACIFIC BELL 730      
323-342 7 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-08-12   
323-342 8 LSANCA23DS0  9740 PACIFIC BELL 730      
323-342 9 LSANCA23DS0  9740 PACIFIC BELL 730      
323-343 A LSANCA23DS0  9740 PACIFIC BELL 730      
323-350 A TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-352 A LSANCA23DS0  9740 PACIFIC BELL 730      
323-352 0 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-02-24   
323-352 1 LSANCA23DS0  9740 PACIFIC BELL 730      
323-352 2 LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-09-29   
323-352 3 SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-06-04   
323-352 4 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-09-19   
323-352 5 GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2004-03-09   
323-352 6 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2005-09-19   
323-352 7 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-06-19   
323-352 8 SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2007-03-13   
323-352 9 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2013-10-28   
323-379 A TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
323-379 0 LSANCARCD3S  649C ONVOY, LLC - CA 730      
323-379 1 LSANCARCD3S  649C ONVOY, LLC - CA 730   2017-06-11   
323-379 2 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-11-25   
323-379 3 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-12-11   
323-379 4 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-12-11   
323-379 5 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-12-15   
323-379 6 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-03-04   
323-379 7 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-03-04   
323-379 8 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-03-04   
323-379 9 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-12-15   
323-405 A IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-405 0 IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
323-405 1 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-06-15   
323-405 2 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2006-06-06   
323-405 3 LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2007-12-04   
323-405 4 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-06-15   
323-405 5 TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2007-02-18   
323-405 6 IRVECAEIDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730   2015-05-04   
323-405 7 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
323-405 8 LSANCARCD3S  649C ONVOY, LLC - CA 730   2010-03-07   
323-405 9 LSANCARCD3S  649C ONVOY, LLC - CA 730   2018-12-24   
323-409 A LSANCA23DS0  9740 PACIFIC BELL 730      
323-409 0 LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-07-26   
323-409 1 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 2 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 3 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 4 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 5 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 6 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 7 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   
323-409 8 LSANCA23DS0  9740 PACIFIC BELL 730   2007-03-24   

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.