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: SNJUCACL7MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
925-880 9 East Contra Costa CA 965H FRACTEL, LLC 722   2021-09-12   
925-966 A Antioch CA 965H FRACTEL, LLC 722      
925-966 6 Antioch CA 965H FRACTEL, LLC 722   2021-06-19   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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