| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (970) 257-10** | (970) 257-1000 - (970) 257-1099 | 80 |
| (970) 257-11** | (970) 257-1100 - (970) 257-1199 | 76 |
| (970) 257-12** | (970) 257-1203 - (970) 257-1299 | 70 |
| (970) 257-13** | (970) 257-1300 - (970) 257-1398 | 75 |
| (970) 257-14** | (970) 257-1400 - (970) 257-1498 | 75 |
| (970) 257-15** | (970) 257-1500 - (970) 257-1599 | 74 |
| (970) 257-16** | (970) 257-1600 - (970) 257-1699 | 72 |
| (970) 257-17** | (970) 257-1700 - (970) 257-1799 | 80 |
| (970) 257-18** | (970) 257-1800 - (970) 257-1899 | 77 |
| (970) 257-19** | (970) 257-1900 - (970) 257-1999 | 80 |
US Phone Directory: (970) 257-1***
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