| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 474-40** | (303) 474-4000 - (303) 474-4099 | 89 |
| (303) 474-41** | (303) 474-4100 - (303) 474-4199 | 90 |
| (303) 474-42** | (303) 474-4200 - (303) 474-4299 | 95 |
| (303) 474-43** | (303) 474-4300 - (303) 474-4399 | 91 |
| (303) 474-44** | (303) 474-4400 - (303) 474-4499 | 95 |
| (303) 474-45** | (303) 474-4500 - (303) 474-4599 | 93 |
| (303) 474-46** | (303) 474-4600 - (303) 474-4699 | 89 |
| (303) 474-47** | (303) 474-4700 - (303) 474-4799 | 91 |
| (303) 474-48** | (303) 474-4800 - (303) 474-4899 | 97 |
| (303) 474-49** | (303) 474-4900 - (303) 474-4999 | 87 |
US Phone Directory: (303) 474-4***
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