| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (406) 770-30** | (406) 770-3000 - (406) 770-3096 | 36 |
| (406) 770-31** | (406) 770-3100 - (406) 770-3181 | 26 |
| (406) 770-32** | (406) 770-3200 - (406) 770-3284 | 5 |
| (406) 770-35** | (406) 770-3550 - (406) 770-3550 | 1 |
| (406) 770-36** | (406) 770-3636 - (406) 770-3674 | 3 |
| (406) 770-37** | (406) 770-3767 - (406) 770-3795 | 4 |
US Phone Directory: (406) 770-3***
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