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: ELCJCA11DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
619-401 A El Cajon CA 9740 PACIFIC BELL 732      
619-440 A El Cajon CA 9740 PACIFIC BELL 732      
619-441 A El Cajon CA 9740 PACIFIC BELL 732      
619-442 A El Cajon CA 9740 PACIFIC BELL 732      
619-444 A El Cajon CA 9740 PACIFIC BELL 732      
619-447 A El Cajon CA 9740 PACIFIC BELL 732      
619-579 A El Cajon CA 9740 PACIFIC BELL 732      
619-588 A El Cajon CA 9740 PACIFIC BELL 732      
619-590 A El Cajon CA 9740 PACIFIC BELL 732      
619-593 A El Cajon CA 9740 PACIFIC BELL 732      
619-768 4 El Cajon CA 9740 PACIFIC BELL 732   2002-04-12   

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

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