| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (406) 443-60** | (406) 443-6000 - (406) 443-6099 | 80 |
| (406) 443-61** | (406) 443-6101 - (406) 443-6199 | 75 |
| (406) 443-62** | (406) 443-6200 - (406) 443-6299 | 87 |
| (406) 443-63** | (406) 443-6300 - (406) 443-6399 | 82 |
| (406) 443-64** | (406) 443-6400 - (406) 443-6499 | 84 |
| (406) 443-65** | (406) 443-6500 - (406) 443-6599 | 87 |
| (406) 443-66** | (406) 443-6600 - (406) 443-6699 | 81 |
| (406) 443-68** | (406) 443-6813 - (406) 443-6895 | 8 |
US Phone Directory: (406) 443-6***
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