| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 377-70** | (303) 377-7000 - (303) 377-7099 | 74 |
| (303) 377-71** | (303) 377-7101 - (303) 377-7198 | 70 |
| (303) 377-72** | (303) 377-7200 - (303) 377-7299 | 72 |
| (303) 377-73** | (303) 377-7301 - (303) 377-7398 | 65 |
| (303) 377-74** | (303) 377-7402 - (303) 377-7499 | 68 |
| (303) 377-75** | (303) 377-7500 - (303) 377-7599 | 65 |
| (303) 377-76** | (303) 377-7600 - (303) 377-7697 | 71 |
| (303) 377-77** | (303) 377-7700 - (303) 377-7798 | 66 |
| (303) 377-78** | (303) 377-7800 - (303) 377-7899 | 73 |
| (303) 377-79** | (303) 377-7900 - (303) 377-7999 | 56 |
US Phone Directory: (303) 377-7***
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