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: 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-216 A Great Falls MT GRFLMTMAHG1  648      
406-216 0 Great Falls MT GRFLMTMAHG1  648      
406-216 1 Great Falls MT GRFLMTMAHG1  648      
406-216 2 Great Falls MT GRFLMTMAHG1  648      
406-216 3 Great Falls MT GRFLMTMAHG1  648      
406-216 4 Great Falls MT GRFLMTMAHG1  648      
406-216 5 Great Falls MT GRFLMTMAHG1  648      
406-216 8 Great Falls MT GRFLMTMAHG1  648      
406-216 9 Great Falls MT GRFLMTMAHG1  648      
406-271 A Conrad MT CNRDMTAGDS0  648      
406-271 0 Conrad MT CNRDMTAGDS0  648      
406-271 1 Conrad MT CNRDMTAGDS0  648      
406-271 2 Conrad MT CNRDMTAGDS0  648      
406-271 3 Conrad MT CNRDMTAGDS0  648      
406-271 4 Conrad MT CNRDMTAGDS0  648      
406-271 5 Conrad MT CNRDMTAGDS0  648      
406-271 7 Conrad MT CNRDMTAGDS0  648      
406-271 8 Conrad MT CNRDMTAGDS0  648      
406-271 9 Conrad MT CNRDMTAGDS0  648      
406-424 A Shelby MT SHLBMTALRL0  648      
406-424 1 Shelby MT SHLBMTALRL0  648      
406-424 2 Shelby MT SHLBMTALRL0  648      
406-424 4 Shelby MT SHLBMTALRL0  648      
406-424 5 Shelby MT SHLBMTALRL0  648      
406-424 7 Shelby MT SHLBMTALRL0  648      
406-424 8 Shelby MT SHLBMTALRL0  648      
406-424 9 Shelby MT SHLBMTALRL0  648      
406-440 A Helena MT HLNAMTHODS1  648      
406-440 0 Helena MT HLNAMTHODS1  648      
406-440 1 Helena MT HLNAMTHODS1  648      
406-440 3 Helena MT HLNAMTHODS1  648      
406-440 4 Helena MT HLNAMTHODS1  648      
406-440 8 Helena MT HLNAMTHODS1  648      
406-440 9 Helena MT HLNAMTHODS1  648      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.