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: FRSNCAPMDMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-955 3 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2023-07-16   
559-955 4 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2024-09-22   
559-955 6 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2021-04-01   
559-955 7 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2021-04-01   
559-957 A Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2025-08-01   
559-957 0 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2025-10-04   
559-957 8 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2026-06-12   
559-957 9 Tivy Valley CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2025-08-01   
559-992 6 Corcoran CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2015-07-16   
559-996 7 Corcoran CA 6010 NEW CINGULAR WIRELESS PCS, LLC 728   2022-06-22   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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