| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 542-70** | (773) 542-7000 - (773) 542-7099 | 78 |
| (773) 542-71** | (773) 542-7100 - (773) 542-7177 | 42 |
| (773) 542-72** | (773) 542-7270 - (773) 542-7278 | 8 |
| (773) 542-73** | (773) 542-7300 - (773) 542-7373 | 4 |
| (773) 542-75** | (773) 542-7501 - (773) 542-7597 | 74 |
| (773) 542-76** | (773) 542-7601 - (773) 542-7699 | 82 |
| (773) 542-77** | (773) 542-7701 - (773) 542-7798 | 68 |
| (773) 542-78** | (773) 542-7864 - (773) 542-7864 | 1 |
| (773) 542-79** | (773) 542-7909 - (773) 542-7909 | 1 |
US Phone Directory: (773) 542-7***
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