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: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-366 A Los Angeles: DA 14 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-366 0 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-08-13   
323-366 1 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-08-27   
323-366 2 Los Angeles: DA 14 CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2011-04-17   
323-366 3 Los Angeles: DA 14 CA   649C ONVOY, LLC - CA 730   2018-12-24   
323-366 4 Los Angeles: DA 14 CA   649C ONVOY, LLC - CA 730   2018-12-24   
323-366 5 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-10-28   
323-366 6 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-10-30   
323-366 7 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-10-30   
323-366 8 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-10-30   
323-366 9 Los Angeles: DA 14 CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-10-30   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.