| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 378-50** | (773) 378-5000 - (773) 378-5099 | 73 |
| (773) 378-51** | (773) 378-5100 - (773) 378-5196 | 59 |
| (773) 378-52** | (773) 378-5201 - (773) 378-5299 | 72 |
| (773) 378-53** | (773) 378-5301 - (773) 378-5398 | 60 |
| (773) 378-54** | (773) 378-5400 - (773) 378-5499 | 58 |
| (773) 378-55** | (773) 378-5501 - (773) 378-5594 | 44 |
| (773) 378-56** | (773) 378-5601 - (773) 378-5698 | 59 |
| (773) 378-57** | (773) 378-5702 - (773) 378-5799 | 57 |
| (773) 378-58** | (773) 378-5800 - (773) 378-5899 | 61 |
| (773) 378-59** | (773) 378-5901 - (773) 378-5997 | 59 |
US Phone Directory: (773) 378-5***
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