| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 370-10** | (303) 370-1000 - (303) 370-1099 | 46 |
| (303) 370-11** | (303) 370-1100 - (303) 370-1199 | 35 |
| (303) 370-12** | (303) 370-1200 - (303) 370-1298 | 38 |
| (303) 370-13** | (303) 370-1300 - (303) 370-1397 | 39 |
| (303) 370-14** | (303) 370-1421 - (303) 370-1493 | 5 |
| (303) 370-15** | (303) 370-1500 - (303) 370-1554 | 6 |
| (303) 370-16** | (303) 370-1602 - (303) 370-1622 | 2 |
| (303) 370-17** | (303) 370-1708 - (303) 370-1781 | 3 |
| (303) 370-18** | (303) 370-1894 - (303) 370-1894 | 1 |
US Phone Directory: (303) 370-1***
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