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: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 230

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-230 A Sunnyvale CA   6529 T-MOBILE USA, INC. 722      
408-230 0 Sunnyvale CA   5562 METROPCS, INC. 722      
408-230 1 Sunnyvale CA   5562 METROPCS, INC. 722      
408-230 2 Sunnyvale CA   5562 METROPCS, INC. 722      
408-230 3 Sunnyvale CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-230 4 Sunnyvale CA   5562 METROPCS, INC. 722      
408-230 5 Sunnyvale CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-230 6 Sunnyvale CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-230 7 Sunnyvale CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-230 8 Sunnyvale CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-230 9 Sunnyvale CA   5562 METROPCS, INC. 722      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.