| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 337-60** | (303) 337-6000 - (303) 337-6099 | 66 |
| (303) 337-61** | (303) 337-6100 - (303) 337-6199 | 84 |
| (303) 337-62** | (303) 337-6200 - (303) 337-6299 | 85 |
| (303) 337-63** | (303) 337-6300 - (303) 337-6399 | 90 |
| (303) 337-64** | (303) 337-6402 - (303) 337-6499 | 81 |
| (303) 337-65** | (303) 337-6500 - (303) 337-6599 | 80 |
| (303) 337-66** | (303) 337-6600 - (303) 337-6699 | 78 |
| (303) 337-67** | (303) 337-6700 - (303) 337-6799 | 86 |
| (303) 337-68** | (303) 337-6800 - (303) 337-6898 | 88 |
| (303) 337-69** | (303) 337-6900 - (303) 337-6999 | 81 |
US Phone Directory: (303) 337-6***
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