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: 983

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-983 A Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 0 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 1 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   
323-983 2 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 3 Los Angeles: DA 06 CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2006-05-06   
323-983 4 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 5 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 6 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 7 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 8 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      
323-983 9 Los Angeles: DA 06 CA LSANCA54DS0  8782 ALLEGIANCE TELECOM, INC. - CA 730      

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.