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: SNDGCAJW2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-449 A Oceanside: Oceanside DA CA 939H COMMIO, LLC 732      
442-449 8 Oceanside: Oceanside DA CA 939H COMMIO, LLC 732   2024-01-20   
442-449 9 Oceanside: Oceanside DA CA 939H COMMIO, LLC 732   2022-04-16   

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

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