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: 772

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-772 A Mountain View CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-772 0 Mountain View CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2015-09-02   
650-772 1 Mountain View CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-12-01   
650-772 2 Mountain View CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-12-01   
650-772 3 Mountain View CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2015-01-17   
650-772 4 Mountain View CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-12-18   
650-772 5 Mountain View CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-12-18   
650-772 6 Mountain View CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-12-18   
650-772 7 Mountain View CA SNJSCA02DS4  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2014-12-27   
650-772 8 Mountain View CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2014-12-20   
650-772 9 Mountain View CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2014-11-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.