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: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 989

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-989 A San Jose: West DA CA SNJSCA02DS0  9740 PACIFIC BELL 722      
408-989 0 San Jose: West DA CA SNJSCA02DS0  9740 PACIFIC BELL 722      
408-989 1 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 2 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 3 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 4 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 5 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 6 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 7 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 8 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
408-989 9 San Jose: West DA CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.