| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 306-60** | (303) 306-6000 - (303) 306-6099 | 54 |
| (303) 306-61** | (303) 306-6100 - (303) 306-6199 | 60 |
| (303) 306-62** | (303) 306-6202 - (303) 306-6299 | 60 |
| (303) 306-63** | (303) 306-6300 - (303) 306-6399 | 61 |
| (303) 306-64** | (303) 306-6400 - (303) 306-6499 | 64 |
| (303) 306-65** | (303) 306-6500 - (303) 306-6598 | 54 |
| (303) 306-66** | (303) 306-6601 - (303) 306-6698 | 63 |
| (303) 306-67** | (303) 306-6700 - (303) 306-6799 | 57 |
| (303) 306-68** | (303) 306-6800 - (303) 306-6899 | 59 |
| (303) 306-69** | (303) 306-6903 - (303) 306-6999 | 59 |
US Phone Directory: (303) 306-6***
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