| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 450-60** | (303) 450-6000 - (303) 450-6097 | 56 |
| (303) 450-61** | (303) 450-6100 - (303) 450-6199 | 61 |
| (303) 450-62** | (303) 450-6200 - (303) 450-6299 | 58 |
| (303) 450-63** | (303) 450-6302 - (303) 450-6397 | 59 |
| (303) 450-64** | (303) 450-6400 - (303) 450-6499 | 55 |
| (303) 450-65** | (303) 450-6500 - (303) 450-6599 | 67 |
| (303) 450-66** | (303) 450-6600 - (303) 450-6697 | 59 |
| (303) 450-67** | (303) 450-6700 - (303) 450-6798 | 55 |
| (303) 450-68** | (303) 450-6800 - (303) 450-6898 | 54 |
| (303) 450-69** | (303) 450-6900 - (303) 450-6998 | 58 |
US Phone Directory: (303) 450-6***
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