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.

NPA: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX: 739

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-739 A Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
323-739 0 Los Angeles: DA 03 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2008-06-20   
323-739 1 Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2008-07-29   
323-739 2 Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2008-06-20   
323-739 3 Los Angeles: DA 03 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730   2008-12-14   
323-739 4 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-02-26   
323-739 5 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-09-30   
323-739 6 Los Angeles: DA 03 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2010-11-23   
323-739 7 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-06-20   
323-739 8 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-11-25   
323-739 9 Los Angeles: DA 03 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2013-08-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.