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: 746D MONTANA OPTICOM, LLC - MT

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-530 3 Laurel MT BZMNMTHZDS0  650   2010-08-16   
406-624 A Bozeman MT BZMNMTHZDS0  650      
406-624 0 Bozeman MT BZMNMTHZDS0  650   2004-05-03   
406-694 0 Billings MT BZMNMTHZDS0  650   2010-08-16   
406-823 1 Livingston MT BZMNMTHZDS0  650   2010-08-16   
406-924 8 Belgrade MT BZMNMTHZDS0  650   2010-08-16   
406-999 A Big Sky MT BZMNMTHZDS0  650      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.