| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 421-90** | (303) 421-9000 - (303) 421-9098 | 66 |
| (303) 421-91** | (303) 421-9100 - (303) 421-9199 | 66 |
| (303) 421-92** | (303) 421-9200 - (303) 421-9295 | 58 |
| (303) 421-93** | (303) 421-9300 - (303) 421-9399 | 77 |
| (303) 421-94** | (303) 421-9400 - (303) 421-9499 | 61 |
| (303) 421-95** | (303) 421-9501 - (303) 421-9599 | 68 |
| (303) 421-96** | (303) 421-9600 - (303) 421-9699 | 68 |
| (303) 421-97** | (303) 421-9702 - (303) 421-9799 | 49 |
| (303) 421-98** | (303) 421-9800 - (303) 421-9899 | 72 |
| (303) 421-99** | (303) 421-9900 - (303) 421-9998 | 62 |
US Phone Directory: (303) 421-9***
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