Local Calling Guide
Area code/prefix search
NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]
NXX: 444
NPA-NXX | BLOCK | Rate Centre | Region | Switch | OCN | LATA | LIR | Eff date | Disc date |
---|---|---|---|---|---|---|---|---|---|
406-444 | A | Helena | MT | HLNAMTMADS0 | 9636 QWEST CORPORATION | 648 |
Last updated: Wed, 20 Nov 2024 21:20:06 UTC
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