| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 988-50** | (303) 988-5000 - (303) 988-5099 | 79 |
| (303) 988-51** | (303) 988-5100 - (303) 988-5195 | 80 |
| (303) 988-52** | (303) 988-5200 - (303) 988-5297 | 71 |
| (303) 988-53** | (303) 988-5300 - (303) 988-5398 | 79 |
| (303) 988-54** | (303) 988-5400 - (303) 988-5499 | 81 |
| (303) 988-55** | (303) 988-5500 - (303) 988-5599 | 87 |
| (303) 988-56** | (303) 988-5600 - (303) 988-5699 | 77 |
| (303) 988-57** | (303) 988-5700 - (303) 988-5799 | 76 |
| (303) 988-58** | (303) 988-5800 - (303) 988-5899 | 75 |
| (303) 988-59** | (303) 988-5900 - (303) 988-5998 | 77 |
US Phone Directory: (303) 988-5***
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