| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 646-10** | (303) 646-1000 - (303) 646-1099 | 77 |
| (303) 646-11** | (303) 646-1100 - (303) 646-1199 | 76 |
| (303) 646-12** | (303) 646-1200 - (303) 646-1299 | 78 |
| (303) 646-13** | (303) 646-1300 - (303) 646-1399 | 80 |
| (303) 646-14** | (303) 646-1400 - (303) 646-1498 | 69 |
| (303) 646-15** | (303) 646-1500 - (303) 646-1599 | 78 |
| (303) 646-16** | (303) 646-1600 - (303) 646-1696 | 4 |
| (303) 646-17** | (303) 646-1700 - (303) 646-1798 | 40 |
| (303) 646-18** | (303) 646-1832 - (303) 646-1899 | 35 |
| (303) 646-19** | (303) 646-1900 - (303) 646-1999 | 70 |
US Phone Directory: (303) 646-1***
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