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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-440 A Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 0 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 1 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 2 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 3 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 4 Half Moon Bay CA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-440 5 Half Moon Bay CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-440 6 Half Moon Bay CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-440 7 Half Moon Bay CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-440 8 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-440 9 Half Moon Bay CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.