Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 429

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-429 A Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-429 0 Campbell CA   6529 T-MOBILE USA, INC. 722      
408-429 1 Campbell CA   515J IP HORIZON LLC 722   2003-10-12   
408-429 2 Campbell CA   515J IP HORIZON LLC 722   2003-10-12   
408-429 3 Campbell CA   6529 T-MOBILE USA, INC. 722   2004-09-16   
408-429 4 Campbell CA   6529 T-MOBILE USA, INC. 722   2005-03-03   
408-429 5 Campbell CA   6529 T-MOBILE USA, INC. 722   2008-02-04   
408-429 6 Campbell CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
408-429 7 Campbell CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
408-429 8 Campbell CA   318J COMCAST IP PHONE, LLC 722   2007-09-01   
408-429 9 Campbell CA   6529 T-MOBILE USA, INC. 722      

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

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