| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 499-40** | (303) 499-4000 - (303) 499-4096 | 59 |
| (303) 499-41** | (303) 499-4100 - (303) 499-4198 | 64 |
| (303) 499-42** | (303) 499-4200 - (303) 499-4299 | 61 |
| (303) 499-43** | (303) 499-4300 - (303) 499-4399 | 68 |
| (303) 499-44** | (303) 499-4401 - (303) 499-4498 | 68 |
| (303) 499-45** | (303) 499-4500 - (303) 499-4599 | 74 |
| (303) 499-46** | (303) 499-4600 - (303) 499-4697 | 55 |
| (303) 499-47** | (303) 499-4700 - (303) 499-4798 | 58 |
| (303) 499-48** | (303) 499-4800 - (303) 499-4899 | 61 |
| (303) 499-49** | (303) 499-4900 - (303) 499-4999 | 64 |
US Phone Directory: (303) 499-4***
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