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: 7442 MCI WORLDCOM COMMUNICATIONS, INC. - OR

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
541-293 3 Nyssa OR BOISIDMAXTX  652   2014-11-23   
541-823 5 Ontario OR BOISIDMAXTX  652   2011-12-01   
541-920 A Vale OR BOISIDMAXTX  652      
541-920 9 Vale OR BOISIDMAXTX  652   2014-03-05   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.