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Primary City:Roundup
This is the Primary City:Roundup page list. Its detail is as below.
| Prefix | State | Usage | Carrier Name |
|---|---|---|---|
| (406) 320- | Montana | Wireless | Cellco Partnership DBA Verizon Wireless |
| (406) 323- | Montana | Landline | Mid-rivers Telephone Cooperative |
| (406) 331- | Montana | Wireless | Cellco Partnership DBA Verizon Wireless |
| (406) 913- | Montana | Wireless | Cable & Communications Corporation |
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