| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (303) 503-80** | (303) 503-8000 - (303) 503-8098 | 38 |
| (303) 503-81** | (303) 503-8101 - (303) 503-8197 | 38 |
| (303) 503-82** | (303) 503-8202 - (303) 503-8298 | 37 |
| (303) 503-83** | (303) 503-8300 - (303) 503-8398 | 36 |
| (303) 503-84** | (303) 503-8404 - (303) 503-8499 | 35 |
| (303) 503-85** | (303) 503-8505 - (303) 503-8599 | 29 |
| (303) 503-86** | (303) 503-8610 - (303) 503-8690 | 34 |
| (303) 503-87** | (303) 503-8700 - (303) 503-8796 | 42 |
| (303) 503-88** | (303) 503-8803 - (303) 503-8898 | 26 |
| (303) 503-89** | (303) 503-8901 - (303) 503-8999 | 32 |
US Phone Directory: (303) 503-8***
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