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.
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Switch: GRFLMTMAHG1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-216 A Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 0 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648   2023-02-24   
406-216 1 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 2 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 3 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 4 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 5 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 8 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-216 9 Great Falls MT 3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      

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

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