Local Calling Guide
Area code/prefix search
NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]
NXX: 923
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
406-923 | A | Great Falls | MT | MSSLMTXC3MD | 939H COMMIO, LLC | 648 | |||
406-923 | 3 | Great Falls | MT | MSSLMTXC3MD | 939H COMMIO, LLC | 648 | 2023-03-26 | ||
406-923 | 8 | Great Falls | MT | GRFLMTMAGMD | 6529 T-MOBILE USA, INC. | 648 | 2022-11-21 | ||
406-923 | 9 | Great Falls | MT | GRFLMTMAGMD | 6529 T-MOBILE USA, INC. | 648 | 2022-11-21 |
Last updated: Fri, 22 Mar 2024 03:02:44 UTC
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