| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 617-30** | (303) 617-3000 - (303) 617-3099 | 84 |
| (303) 617-31** | (303) 617-3100 - (303) 617-3198 | 69 |
| (303) 617-32** | (303) 617-3200 - (303) 617-3299 | 77 |
| (303) 617-33** | (303) 617-3300 - (303) 617-3399 | 85 |
| (303) 617-34** | (303) 617-3400 - (303) 617-3499 | 76 |
| (303) 617-35** | (303) 617-3500 - (303) 617-3599 | 76 |
| (303) 617-36** | (303) 617-3600 - (303) 617-3699 | 79 |
| (303) 617-37** | (303) 617-3700 - (303) 617-3799 | 81 |
| (303) 617-38** | (303) 617-3800 - (303) 617-3899 | 67 |
| (303) 617-39** | (303) 617-3900 - (303) 617-3999 | 78 |
US Phone Directory: (303) 617-3***
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