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.

Switch: SNFCCA21XDZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-495 3 San Jose: West DA CA 156J RCLEC, INC. 722   2017-09-09   
408-495 8 San Jose: West DA CA 156J RCLEC, INC. 722   2017-09-09   
415-510 2 San Francisco: Central DA CA 156J RCLEC, INC. 722   2015-03-14   
415-930 A San Francisco: Central DA CA 156J RCLEC, INC. 722      
415-930 4 San Francisco: Central DA CA 156J RCLEC, INC. 722   2014-02-03   
628-213 3 San Francisco: Central DA CA 156J RCLEC, INC. 722   2017-09-19   
628-231 2 San Francisco: Central DA CA 156J RCLEC, INC. 722   2015-12-29   
628-895 A San Francisco: Central DA CA 156J RCLEC, INC. 722      
628-895 7 San Francisco: Central DA CA 156J RCLEC, INC. 722   2017-03-20   
650-313 A Palo Alto CA 156J RCLEC, INC. 722      
650-313 5 Palo Alto CA 156J RCLEC, INC. 722   2017-10-08   
650-849 8 Palo Alto CA 156J RCLEC, INC. 722   2018-02-08   
650-865 2 San Mateo CA 156J RCLEC, INC. 722   2017-09-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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