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: 2235 BLACKFOOT TEL. COOP., INC.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-825 9 Clinton MT CLTNMTXCRS1  648      
406-826 A Plains MT PLNSMTXCRS1  648      
406-826 0 Plains MT PLNSMTXCRS1  648      
406-826 2 Plains MT PLNSMTXCRS1  648      
406-826 3 Plains MT PLNSMTXCRS1  648      
406-826 4 Plains MT PLNSMTXCRS1  648      
406-826 5 Plains MT PLNSMTXCRS1  648      
406-826 6 Plains MT PLNSMTXCRS1  648      
406-826 9 Plains MT PLNSMTXCRS1  648      
406-827 A Thompson Falls MT THFLMTXCRS1  648      
406-827 0 Thompson Falls MT THFLMTXCRS1  648      
406-827 1 Thompson Falls MT THFLMTXCRS1  648      
406-827 2 Thompson Falls MT THFLMTXCRS1  648      
406-827 3 Thompson Falls MT THFLMTXCRS1  648      
406-827 4 Thompson Falls MT THFLMTXCRS1  648      
406-827 5 Thompson Falls MT THFLMTXCRS1  648      
406-827 6 Thompson Falls MT THFLMTXCRS1  648      
406-827 7 Thompson Falls MT THFLMTXCRS1  648      
406-827 9 Thompson Falls MT THFLMTXCRS1  648      
406-847 A Noxon MT NOXNMTXCRS1  648      
406-859 A Philipsburg MT PHBGMTXCRS1  648      
406-864 A South Alberton MT ALTNMTXCRS1  648      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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