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: 603

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-603 A Campbell CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
408-603 0 Campbell CA OKLECAZV1MD  5562 METROPCS, INC. 722   2004-12-28   
408-603 1 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2010-03-03   
408-603 2 Campbell CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
408-603 3 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-04-17   
408-603 4 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-04-17   
408-603 5 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-03-15   
408-603 6 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-12-28   
408-603 7 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-02-03   
408-603 8 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2003-07-21   
408-603 9 Campbell CA OKLECAZV1MD  5562 METROPCS, INC. 722   2003-03-01   

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

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