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.

NPA: 619 [Rate centres in NPA 619] [Dial plan for NPA 619]

NXX: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
619-478 A Campo CA CAMPCA11RS0  9740 PACIFIC BELL 732      
619-478 0 Campo CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2014-09-28   
619-478 1 Campo CA   9740 PACIFIC BELL 732      
619-478 2 Campo CA   9740 PACIFIC BELL 732      
619-478 3 Campo CA   516C AT&T CORP. 732   2011-09-26   
619-478 4 Campo CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2012-12-28   
619-478 5 Campo CA   9740 PACIFIC BELL 732      
619-478 6 Campo CA   649C ONVOY, LLC - CA 732   2006-01-14   
619-478 7 Campo CA   649C ONVOY, LLC - CA 732   2008-09-19   
619-478 8 Campo CA   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 732   2002-01-02   
619-478 9 Campo CA   9740 PACIFIC BELL 732      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.