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: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-444 A Fallbrook CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732      
442-444 0 Fallbrook CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2011-06-25   
442-444 1 Fallbrook CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2011-07-29   
442-444 2 Fallbrook CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2011-08-14   
442-444 4 Fallbrook CA   649C ONVOY, LLC - CA 732   2010-12-06   
442-444 5 Fallbrook CA   649C ONVOY, LLC - CA 732   2012-12-31   
442-444 6 Fallbrook CA   649C ONVOY, LLC - CA 732   2012-12-31   
442-444 7 Fallbrook CA   649C ONVOY, LLC - CA 732   2013-03-18   
442-444 8 Fallbrook CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 732   2013-07-11   
442-444 9 Fallbrook CA   649C ONVOY, LLC - CA 732   2013-11-28   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.