| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 743-10** | (773) 743-1000 - (773) 743-1099 | 71 |
| (773) 743-11** | (773) 743-1100 - (773) 743-1199 | 74 |
| (773) 743-12** | (773) 743-1200 - (773) 743-1298 | 74 |
| (773) 743-13** | (773) 743-1300 - (773) 743-1399 | 65 |
| (773) 743-14** | (773) 743-1400 - (773) 743-1499 | 71 |
| (773) 743-15** | (773) 743-1500 - (773) 743-1598 | 72 |
| (773) 743-16** | (773) 743-1608 - (773) 743-1696 | 70 |
| (773) 743-17** | (773) 743-1700 - (773) 743-1798 | 78 |
| (773) 743-18** | (773) 743-1800 - (773) 743-1898 | 71 |
| (773) 743-19** | (773) 743-1901 - (773) 743-1999 | 68 |
US Phone Directory: (773) 743-1***
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