| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 537-70** | (303) 537-7002 - (303) 537-7097 | 73 |
| (303) 537-71** | (303) 537-7100 - (303) 537-7195 | 76 |
| (303) 537-72** | (303) 537-7200 - (303) 537-7299 | 66 |
| (303) 537-73** | (303) 537-7300 - (303) 537-7399 | 74 |
| (303) 537-74** | (303) 537-7400 - (303) 537-7499 | 69 |
| (303) 537-75** | (303) 537-7500 - (303) 537-7597 | 65 |
| (303) 537-76** | (303) 537-7600 - (303) 537-7699 | 86 |
| (303) 537-77** | (303) 537-7701 - (303) 537-7799 | 76 |
| (303) 537-78** | (303) 537-7800 - (303) 537-7898 | 68 |
| (303) 537-79** | (303) 537-7900 - (303) 537-7999 | 68 |
US Phone Directory: (303) 537-7***
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