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: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-501 A San Jose: West DA CA SNJSCA21DS1  9740 PACIFIC BELL 722      
408-501 0 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 1 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 2 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 3 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 4 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 5 San Jose: West DA CA   624H ONVOY SPECTRUM, LLC 722   2023-09-15   
408-501 6 San Jose: West DA CA   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2011-10-12   
408-501 7 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 8 San Jose: West DA CA   9740 PACIFIC BELL 722      
408-501 9 San Jose: West DA CA   9740 PACIFIC BELL 722      

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

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