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: 428

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-428 A San Jose: North DA CA SNJSCA21DS2  9740 PACIFIC BELL 722      
408-428 0 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 1 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 2 San Jose: North DA CA   5562 METROPCS, INC. 722   2008-06-11   
408-428 3 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 4 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 5 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 6 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 7 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 8 San Jose: North DA CA   9740 PACIFIC BELL 722      
408-428 9 San Jose: North DA CA   9740 PACIFIC BELL 722      

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

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