| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 783-43** | (303) 783-4329 - (303) 783-4329 | 1 |
| (303) 783-44** | (303) 783-4437 - (303) 783-4437 | 1 |
| (303) 783-46** | (303) 783-4604 - (303) 783-4699 | 74 |
| (303) 783-47** | (303) 783-4700 - (303) 783-4799 | 75 |
| (303) 783-48** | (303) 783-4800 - (303) 783-4889 | 21 |
| (303) 783-49** | (303) 783-4900 - (303) 783-4999 | 18 |
US Phone Directory: (303) 783-4***
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