| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 288-40** | (303) 288-4000 - (303) 288-4098 | 77 |
| (303) 288-41** | (303) 288-4100 - (303) 288-4199 | 74 |
| (303) 288-42** | (303) 288-4200 - (303) 288-4299 | 73 |
| (303) 288-43** | (303) 288-4300 - (303) 288-4399 | 81 |
| (303) 288-44** | (303) 288-4400 - (303) 288-4497 | 78 |
| (303) 288-45** | (303) 288-4500 - (303) 288-4599 | 79 |
| (303) 288-46** | (303) 288-4600 - (303) 288-4699 | 73 |
| (303) 288-47** | (303) 288-4700 - (303) 288-4799 | 72 |
| (303) 288-48** | (303) 288-4800 - (303) 288-4898 | 81 |
| (303) 288-49** | (303) 288-4901 - (303) 288-4999 | 73 |
US Phone Directory: (303) 288-4***
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