| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 663-70** | (303) 663-7044 - (303) 663-7099 | 15 |
| (303) 663-71** | (303) 663-7100 - (303) 663-7196 | 47 |
| (303) 663-72** | (303) 663-7200 - (303) 663-7254 | 14 |
| (303) 663-73** | (303) 663-7300 - (303) 663-7399 | 78 |
| (303) 663-74** | (303) 663-7400 - (303) 663-7499 | 73 |
| (303) 663-75** | (303) 663-7501 - (303) 663-7599 | 82 |
| (303) 663-76** | (303) 663-7636 - (303) 663-7682 | 5 |
| (303) 663-77** | (303) 663-7762 - (303) 663-7762 | 1 |
| (303) 663-78** | (303) 663-7800 - (303) 663-7898 | 78 |
| (303) 663-79** | (303) 663-7901 - (303) 663-7999 | 71 |
US Phone Directory: (303) 663-7***
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