| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 477-70** | (773) 477-7000 - (773) 477-7099 | 71 |
| (773) 477-71** | (773) 477-7100 - (773) 477-7199 | 75 |
| (773) 477-72** | (773) 477-7200 - (773) 477-7299 | 68 |
| (773) 477-73** | (773) 477-7300 - (773) 477-7399 | 73 |
| (773) 477-74** | (773) 477-7400 - (773) 477-7499 | 76 |
| (773) 477-75** | (773) 477-7500 - (773) 477-7599 | 73 |
| (773) 477-76** | (773) 477-7600 - (773) 477-7699 | 73 |
| (773) 477-77** | (773) 477-7700 - (773) 477-7799 | 76 |
| (773) 477-78** | (773) 477-7801 - (773) 477-7899 | 75 |
| (773) 477-79** | (773) 477-7900 - (773) 477-7999 | 64 |
US Phone Directory: (773) 477-7***
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