| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 507-30** | (303) 507-3000 - (303) 507-3095 | 41 |
| (303) 507-31** | (303) 507-3101 - (303) 507-3196 | 26 |
| (303) 507-32** | (303) 507-3201 - (303) 507-3299 | 28 |
| (303) 507-33** | (303) 507-3300 - (303) 507-3397 | 34 |
| (303) 507-34** | (303) 507-3400 - (303) 507-3499 | 26 |
| (303) 507-35** | (303) 507-3504 - (303) 507-3598 | 35 |
| (303) 507-36** | (303) 507-3601 - (303) 507-3698 | 29 |
| (303) 507-37** | (303) 507-3701 - (303) 507-3795 | 34 |
| (303) 507-38** | (303) 507-3800 - (303) 507-3898 | 36 |
| (303) 507-39** | (303) 507-3900 - (303) 507-3996 | 31 |
US Phone Directory: (303) 507-3***
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