| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 375-30** | (303) 375-3000 - (303) 375-3057 | 7 |
| (303) 375-31** | (303) 375-3107 - (303) 375-3194 | 4 |
| (303) 375-32** | (303) 375-3200 - (303) 375-3280 | 4 |
| (303) 375-33** | (303) 375-3300 - (303) 375-3396 | 8 |
| (303) 375-34** | (303) 375-3402 - (303) 375-3486 | 6 |
| (303) 375-35** | (303) 375-3500 - (303) 375-3586 | 8 |
| (303) 375-36** | (303) 375-3601 - (303) 375-3671 | 4 |
| (303) 375-37** | (303) 375-3715 - (303) 375-3785 | 4 |
| (303) 375-38** | (303) 375-3802 - (303) 375-3880 | 8 |
| (303) 375-39** | (303) 375-3915 - (303) 375-3987 | 7 |
US Phone Directory: (303) 375-3***
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