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: 669 [Rate centres in NPA 669] [Dial plan for NPA 669]

NXX: 279

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
669-279 A Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
669-279 0 Campbell CA   197D VONAGE AMERICA LLC 722   2020-05-29   
669-279 1 Campbell CA   197D VONAGE AMERICA LLC 722   2020-05-29   
669-279 2 Campbell CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-05-07   
669-279 3 Campbell CA   649C ONVOY, LLC - CA 722   2020-08-13   
669-279 4 Campbell CA   649C ONVOY, LLC - CA 722   2020-08-13   
669-279 5 Campbell CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-08-08   
669-279 6 Campbell CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-08-08   
669-279 7 Campbell CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2020-04-09   
669-279 8 Campbell CA   6529 T-MOBILE USA, INC. 722   2020-03-15   
669-279 9 Campbell CA   6529 T-MOBILE USA, INC. 722   2020-03-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.