| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 666-70** | (303) 666-7000 - (303) 666-7099 | 73 |
| (303) 666-71** | (303) 666-7100 - (303) 666-7199 | 81 |
| (303) 666-72** | (303) 666-7200 - (303) 666-7299 | 84 |
| (303) 666-73** | (303) 666-7301 - (303) 666-7399 | 74 |
| (303) 666-74** | (303) 666-7400 - (303) 666-7499 | 72 |
| (303) 666-75** | (303) 666-7500 - (303) 666-7599 | 87 |
| (303) 666-76** | (303) 666-7600 - (303) 666-7699 | 82 |
| (303) 666-77** | (303) 666-7700 - (303) 666-7798 | 79 |
| (303) 666-78** | (303) 666-7800 - (303) 666-7899 | 73 |
| (303) 666-79** | (303) 666-7900 - (303) 666-7999 | 73 |
US Phone Directory: (303) 666-7***
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