| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 504-30** | (773) 504-3003 - (773) 504-3099 | 12 |
| (773) 504-31** | (773) 504-3107 - (773) 504-3188 | 13 |
| (773) 504-32** | (773) 504-3202 - (773) 504-3292 | 16 |
| (773) 504-33** | (773) 504-3325 - (773) 504-3396 | 7 |
| (773) 504-34** | (773) 504-3401 - (773) 504-3487 | 9 |
| (773) 504-35** | (773) 504-3524 - (773) 504-3593 | 9 |
| (773) 504-36** | (773) 504-3609 - (773) 504-3670 | 10 |
| (773) 504-37** | (773) 504-3700 - (773) 504-3753 | 8 |
| (773) 504-38** | (773) 504-3804 - (773) 504-3895 | 10 |
| (773) 504-39** | (773) 504-3900 - (773) 504-3984 | 12 |
US Phone Directory: (773) 504-3***
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