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.

Switch: BKFDCA11VMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
661-386 A Rosamond CA 776C CHARTER FIBERLINK CA-CCO, LLC - CA 734      
661-386 0 Rosamond CA 776C CHARTER FIBERLINK CA-CCO, LLC - CA 734   2016-12-16   
661-584 9 Mojave CA 776C CHARTER FIBERLINK CA-CCO, LLC - CA 734   2016-12-17   

Last updated: Fri, 03 Nov 2023 21:02:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.