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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OCN: 935G TRI TEL, INC. - MT

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-445 4 Red Lodge MT BLNGMTMATMD  650      
406-551 8 Bozeman MT BLNGMTMATMD  650      
406-606 A Billings MT BLNGMTMATMD  650      
406-606 1 Billings MT BLNGMTMATMD  650      
406-623 2 Hardin MT BLNGMTMATMD  650      
406-633 7 Laurel MT BLNGMTMATMD  650      
406-662 2 Bridger MT BLNGMTMATMD  650      
406-668 2 Fromberg MT BLNGMTMATMD  650      
406-905 2 Joliet MT BLNGMTMATMD  650      

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

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