| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 637-70** | (303) 637-7000 - (303) 637-7097 | 65 |
| (303) 637-71** | (303) 637-7100 - (303) 637-7199 | 79 |
| (303) 637-72** | (303) 637-7200 - (303) 637-7299 | 72 |
| (303) 637-73** | (303) 637-7301 - (303) 637-7399 | 60 |
| (303) 637-74** | (303) 637-7400 - (303) 637-7499 | 77 |
| (303) 637-75** | (303) 637-7500 - (303) 637-7598 | 64 |
| (303) 637-76** | (303) 637-7600 - (303) 637-7698 | 75 |
| (303) 637-77** | (303) 637-7702 - (303) 637-7799 | 75 |
| (303) 637-78** | (303) 637-7800 - (303) 637-7898 | 76 |
| (303) 637-79** | (303) 637-7900 - (303) 637-7999 | 69 |
US Phone Directory: (303) 637-7***
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