| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 690-50** | (303) 690-5000 - (303) 690-5099 | 84 |
| (303) 690-51** | (303) 690-5100 - (303) 690-5199 | 84 |
| (303) 690-52** | (303) 690-5200 - (303) 690-5299 | 80 |
| (303) 690-53** | (303) 690-5300 - (303) 690-5399 | 78 |
| (303) 690-54** | (303) 690-5400 - (303) 690-5499 | 83 |
| (303) 690-55** | (303) 690-5500 - (303) 690-5599 | 83 |
| (303) 690-56** | (303) 690-5600 - (303) 690-5697 | 83 |
| (303) 690-57** | (303) 690-5702 - (303) 690-5799 | 82 |
| (303) 690-58** | (303) 690-5800 - (303) 690-5899 | 82 |
| (303) 690-59** | (303) 690-5900 - (303) 690-5999 | 72 |
US Phone Directory: (303) 690-5***
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