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: SNFCCAMMDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
415-341 A San Francisco: Central DA CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
415-349 A San Francisco: Juniper DA CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
650-273 A South San Francisco CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
650-282 A Mountain View CA 485E ASTOUND BROADBAND, LLC - CA 722      
650-458 A San Mateo CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
650-679 A Redwood City CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
650-731 A San Francisco: Juniper DA CA 485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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