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: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-866 A Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 0 Los Angeles: DA 13 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
323-866 1 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 2 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 3 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 4 Los Angeles: DA 13 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-866 5 Los Angeles: DA 13 CA BLTNCAADPS2  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 730      
323-866 6 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 7 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 8 Los Angeles: DA 13 CA LSANCA08DS1  9740 PACIFIC BELL 730      
323-866 9 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.