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.
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Switch: PLSPCA19DMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
442-403 A Desert Hot Springs CA 490J BOOST SUBSCRIBERCO L.L.C. 973      
442-403 9 Desert Hot Springs CA 490J BOOST SUBSCRIBERCO L.L.C. 973   2023-07-31   
442-677 3 Palm Desert CA 490J BOOST SUBSCRIBERCO L.L.C. 973   2023-07-01   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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