| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 525-40** | (303) 525-4002 - (303) 525-4095 | 28 |
| (303) 525-41** | (303) 525-4101 - (303) 525-4191 | 32 |
| (303) 525-42** | (303) 525-4202 - (303) 525-4299 | 28 |
| (303) 525-43** | (303) 525-4301 - (303) 525-4399 | 30 |
| (303) 525-44** | (303) 525-4401 - (303) 525-4499 | 27 |
| (303) 525-45** | (303) 525-4503 - (303) 525-4599 | 35 |
| (303) 525-46** | (303) 525-4600 - (303) 525-4698 | 25 |
| (303) 525-47** | (303) 525-4700 - (303) 525-4796 | 30 |
| (303) 525-48** | (303) 525-4800 - (303) 525-4899 | 31 |
| (303) 525-49** | (303) 525-4903 - (303) 525-4994 | 26 |
US Phone Directory: (303) 525-4***
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