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: 636

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-636 A Los Angeles: DA 06 CA CMTNCA01DS1  9740 PACIFIC BELL 730      
323-636 0 Los Angeles: DA 06 CA CMTNCA01DS1  9740 PACIFIC BELL 730      
323-636 1 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-06   
323-636 2 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-06   
323-636 3 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-06   
323-636 4 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2010-01-31   
323-636 5 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2010-01-31   
323-636 6 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-02-06   
323-636 7 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2010-01-31   
323-636 8 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-12-08   
323-636 9 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-12-08   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.