| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 874-50** | (312) 874-5018 - (312) 874-5047 | 2 |
| (312) 874-51** | (312) 874-5116 - (312) 874-5189 | 5 |
| (312) 874-53** | (312) 874-5307 - (312) 874-5398 | 5 |
| (312) 874-54** | (312) 874-5400 - (312) 874-5483 | 4 |
| (312) 874-56** | (312) 874-5636 - (312) 874-5665 | 2 |
| (312) 874-57** | (312) 874-5706 - (312) 874-5777 | 4 |
| (312) 874-58** | (312) 874-5828 - (312) 874-5893 | 6 |
| (312) 874-59** | (312) 874-5921 - (312) 874-5997 | 4 |
US Phone Directory: (312) 874-5***
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