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.

OCN: 394L COMCAST PHONE OF CALIFORNIA, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
949-771 3 Irvine CA   730   2016-08-23   
949-774 1 Irvine CA   730   2018-06-01   
949-783 3 Irvine CA   730   2009-05-28   
949-783 5 Irvine CA   730   2009-05-28   
949-788 1 Irvine CA   730   2005-11-29   
949-825 5 Irvine CA   730   2009-01-16   
949-825 6 Irvine CA   730   2009-02-12   
949-825 7 Irvine CA   730   2009-02-12   
949-835 8 Trabuco CA   730   2010-04-19   
949-861 2 Irvine CA   730   2005-08-30   
949-861 3 Irvine CA   730   2004-09-02   
949-861 4 Irvine CA   730   2004-09-02   
949-861 8 Irvine CA   730   2004-04-14   
949-872 2 Irvine CA   730   2004-07-06   
949-880 2 Irvine CA   730   2017-08-01   
949-900 6 Saddleback Valley CA   730   2007-04-19   
949-900 7 Saddleback Valley CA   730   2007-04-19   
949-916 A Saddleback Valley CA   730      
949-988 3 Irvine CA   730   2011-06-13   
949-988 7 Irvine CA   730   2011-06-13   
951-336 3 Corona CA   730   2017-07-26   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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