| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 728-10** | (303) 728-1076 - (303) 728-1076 | 1 |
| (303) 728-11** | (303) 728-1157 - (303) 728-1157 | 1 |
| (303) 728-12** | (303) 728-1244 - (303) 728-1244 | 1 |
| (303) 728-13** | (303) 728-1300 - (303) 728-1329 | 4 |
| (303) 728-15** | (303) 728-1502 - (303) 728-1598 | 58 |
| (303) 728-17** | (303) 728-1773 - (303) 728-1773 | 1 |
| (303) 728-18** | (303) 728-1804 - (303) 728-1871 | 23 |
| (303) 728-19** | (303) 728-1994 - (303) 728-1994 | 1 |
US Phone Directory: (303) 728-1***
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