Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 319

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-319 A Polson MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648      
406-319 0 Polson MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2023-12-16   
406-319 1 Polson MT GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-319 2 Polson MT MSSLMTEH4MD  792K CHARTER IP ENABLED SERVICES, LLC 648   2006-04-17   
406-319 3 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-319 4 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-319 5 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-319 6 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-08   
406-319 8 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-319 9 Polson MT GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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