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: 305

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-305 A Los Angeles: DA 09 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730      
323-305 0 Los Angeles: DA 09 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730      
323-305 1 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-11-06   
323-305 2 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-11-06   
323-305 3 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2009-11-06   
323-305 4 Los Angeles: DA 09 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
323-305 5 Los Angeles: DA 09 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   
323-305 6 Los Angeles: DA 09 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2017-10-25   
323-305 7 Los Angeles: DA 09 CA SNANCALWDS1  7262 XO CALIFORNIA, INC. 730      
323-305 8 Los Angeles: DA 09 CA LSANCA02DS1  7421 AT&T - LOCAL 730   2017-12-08   
323-305 9 Los Angeles: DA 09 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-10-08   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.