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: 674

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-674 A San Carlos-Belmont CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-674 0 San Carlos-Belmont CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-12-25   
650-674 1 San Carlos-Belmont CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-12-25   
650-674 2 San Carlos-Belmont CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2022-12-26   
650-674 3 San Carlos-Belmont CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2022-12-26   
650-674 4 San Carlos-Belmont CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-07-23   
650-674 5 San Carlos-Belmont CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2023-11-26   
650-674 6 San Carlos-Belmont CA   433E SONIC TELECOM, LLC - CA 722   2024-03-14   
650-674 7 San Carlos-Belmont CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2023-09-01   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.