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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-371 0 Palm Desert CA 939H COMMIO, LLC 973   2024-01-20   
442-371 1 Palm Desert CA 939H COMMIO, LLC 973   2024-01-20   
442-371 9 Palm Desert CA 939H COMMIO, LLC 973   2024-01-20   
442-381 0 Indio CA 939H COMMIO, LLC 973   2024-01-20   
442-381 4 Indio CA 939H COMMIO, LLC 973   2024-01-20   
442-381 5 Indio CA 939H COMMIO, LLC 973   2024-01-20   
442-383 0 Desert Hot Springs CA 939H COMMIO, LLC 973   2024-01-20   
442-383 1 Desert Hot Springs CA 939H COMMIO, LLC 973   2024-01-20   
442-383 8 Desert Hot Springs CA 939H COMMIO, LLC 973   2024-01-20   
442-420 A Palm Springs CA 939H COMMIO, LLC 973      
442-420 0 Palm Springs CA 939H COMMIO, LLC 973   2022-05-07   
442-443 1 Morongo Valley CA 939H COMMIO, LLC 973   2022-09-24   
442-677 1 Palm Desert CA 939H COMMIO, LLC 973   2022-09-24   
442-677 2 Palm Desert CA 939H COMMIO, LLC 973   2022-10-04   
442-788 6 Desert Hot Springs CA 939H COMMIO, LLC 973   2022-09-24   
442-788 7 Desert Hot Springs CA 939H COMMIO, LLC 973   2022-09-24   
442-822 0 Indio CA 939H COMMIO, LLC 973   2022-09-24   
442-822 1 Indio CA 939H COMMIO, LLC 973   2022-09-24   
442-822 3 Indio CA 939H COMMIO, LLC 973   2022-09-24   
442-833 0 Joshua Tree CA 939H COMMIO, LLC 973   2022-11-10   
760-395 9 Salton CA 939H COMMIO, LLC 973   2022-11-10   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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