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: SNFDCACVCM7

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-336 3 Mountain View CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2007-06-02   
650-336 4 Mountain View CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2007-06-02   
650-353 0 Palo Alto CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-08-05   
650-353 1 Palo Alto CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-08-05   
650-353 6 Palo Alto CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-10-21   
650-384 5 Palo Alto CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-01-06   
650-384 9 Palo Alto CA 6010 NEW CINGULAR WIRELESS PCS, LLC 722   2008-12-16   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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