| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 770-60** | (303) 770-6000 - (303) 770-6099 | 69 |
| (303) 770-61** | (303) 770-6100 - (303) 770-6199 | 72 |
| (303) 770-62** | (303) 770-6206 - (303) 770-6299 | 67 |
| (303) 770-63** | (303) 770-6300 - (303) 770-6399 | 67 |
| (303) 770-64** | (303) 770-6400 - (303) 770-6499 | 67 |
| (303) 770-65** | (303) 770-6500 - (303) 770-6599 | 68 |
| (303) 770-66** | (303) 770-6600 - (303) 770-6698 | 74 |
| (303) 770-67** | (303) 770-6700 - (303) 770-6799 | 66 |
| (303) 770-68** | (303) 770-6800 - (303) 770-6899 | 59 |
| (303) 770-69** | (303) 770-6900 - (303) 770-6999 | 67 |
US Phone Directory: (303) 770-6***
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