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: PLNSMTXCRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-826 A Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 0 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 2 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 3 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 4 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 5 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 6 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      
406-826 9 Plains MT 2235 BLACKFOOT TEL. COOP., INC. 648      

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

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