| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 750-40** | (303) 750-4000 - (303) 750-4099 | 81 |
| (303) 750-41** | (303) 750-4100 - (303) 750-4198 | 79 |
| (303) 750-42** | (303) 750-4200 - (303) 750-4298 | 79 |
| (303) 750-43** | (303) 750-4300 - (303) 750-4399 | 82 |
| (303) 750-44** | (303) 750-4400 - (303) 750-4499 | 79 |
| (303) 750-45** | (303) 750-4500 - (303) 750-4599 | 76 |
| (303) 750-46** | (303) 750-4600 - (303) 750-4698 | 79 |
| (303) 750-47** | (303) 750-4700 - (303) 750-4799 | 70 |
| (303) 750-48** | (303) 750-4800 - (303) 750-4899 | 82 |
| (303) 750-49** | (303) 750-4900 - (303) 750-4998 | 77 |
US Phone Directory: (303) 750-4***
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