| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 819-40** | (303) 819-4045 - (303) 819-4098 | 5 |
| (303) 819-41** | (303) 819-4100 - (303) 819-4198 | 33 |
| (303) 819-42** | (303) 819-4200 - (303) 819-4293 | 37 |
| (303) 819-43** | (303) 819-4300 - (303) 819-4399 | 32 |
| (303) 819-44** | (303) 819-4400 - (303) 819-4499 | 35 |
| (303) 819-45** | (303) 819-4502 - (303) 819-4599 | 48 |
| (303) 819-46** | (303) 819-4603 - (303) 819-4697 | 36 |
| (303) 819-47** | (303) 819-4702 - (303) 819-4799 | 27 |
| (303) 819-48** | (303) 819-4800 - (303) 819-4898 | 27 |
| (303) 819-49** | (303) 819-4901 - (303) 819-4996 | 40 |
US Phone Directory: (303) 819-4***
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