| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 721-90** | (303) 721-9000 - (303) 721-9099 | 38 |
| (303) 721-91** | (303) 721-9100 - (303) 721-9198 | 45 |
| (303) 721-92** | (303) 721-9200 - (303) 721-9298 | 39 |
| (303) 721-93** | (303) 721-9300 - (303) 721-9389 | 41 |
| (303) 721-94** | (303) 721-9400 - (303) 721-9498 | 47 |
| (303) 721-95** | (303) 721-9500 - (303) 721-9597 | 41 |
| (303) 721-96** | (303) 721-9602 - (303) 721-9697 | 44 |
| (303) 721-97** | (303) 721-9700 - (303) 721-9798 | 42 |
| (303) 721-98** | (303) 721-9800 - (303) 721-9899 | 38 |
| (303) 721-99** | (303) 721-9901 - (303) 721-9997 | 37 |
US Phone Directory: (303) 721-9***
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