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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-979 A Los Angeles: DA 06 CA CMTNCA01DS0  9740 PACIFIC BELL 730      
323-979 0 Los Angeles: DA 06 CA   9740 PACIFIC BELL 730      
323-979 1 Los Angeles: DA 06 CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2008-11-24   
323-979 2 Los Angeles: DA 06 CA   899D METROPCS NETWORKS, LLC 730   2009-02-08   
323-979 3 Los Angeles: DA 06 CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2009-11-18   
323-979 4 Los Angeles: DA 06 CA   899D METROPCS NETWORKS, LLC 730   2009-02-08   
323-979 5 Los Angeles: DA 06 CA   899D METROPCS NETWORKS, LLC 730   2009-02-08   
323-979 6 Los Angeles: DA 06 CA   899D METROPCS NETWORKS, LLC 730   2009-02-08   
323-979 7 Los Angeles: DA 06 CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-07-16   
323-979 8 Los Angeles: DA 06 CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-08-16   
323-979 9 Los Angeles: DA 06 CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-09-16   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.