| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 623-30** | (303) 623-3000 - (303) 623-3098 | 62 |
| (303) 623-31** | (303) 623-3101 - (303) 623-3199 | 50 |
| (303) 623-32** | (303) 623-3200 - (303) 623-3299 | 60 |
| (303) 623-33** | (303) 623-3300 - (303) 623-3399 | 71 |
| (303) 623-34** | (303) 623-3400 - (303) 623-3499 | 62 |
| (303) 623-35** | (303) 623-3500 - (303) 623-3598 | 71 |
| (303) 623-36** | (303) 623-3600 - (303) 623-3699 | 54 |
| (303) 623-37** | (303) 623-3700 - (303) 623-3797 | 48 |
| (303) 623-38** | (303) 623-3800 - (303) 623-3899 | 59 |
| (303) 623-39** | (303) 623-3900 - (303) 623-3998 | 41 |
US Phone Directory: (303) 623-3***
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