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: 281

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-281 A San Mateo CA   6529 T-MOBILE USA, INC. 722      
650-281 0 San Mateo CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-04-07   
650-281 1 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 2 San Mateo CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-04-07   
650-281 3 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 4 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 5 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 6 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 7 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 8 San Mateo CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-281 9 San Mateo CA   6529 T-MOBILE USA, INC. 722      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.