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: 561

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-561 A Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 0 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 1 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 2 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 3 Los Angeles: DA 03 CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
323-561 4 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 5 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 6 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 7 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 8 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      
323-561 9 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.