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: 907

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-907 A Los Angeles: DA 06 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-907 0 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-10-07   
323-907 1 Los Angeles: DA 06 CA ONTRCAFXDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 730      
323-907 2 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   
323-907 3 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   
323-907 4 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2010-01-31   
323-907 5 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2009-01-18   
323-907 6 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2009-01-18   
323-907 7 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   
323-907 8 Los Angeles: DA 06 CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2009-01-18   
323-907 9 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.