| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 521-90** | (773) 521-9000 - (773) 521-9099 | 91 |
| (773) 521-91** | (773) 521-9100 - (773) 521-9198 | 76 |
| (773) 521-92** | (773) 521-9201 - (773) 521-9299 | 87 |
| (773) 521-93** | (773) 521-9302 - (773) 521-9398 | 81 |
| (773) 521-94** | (773) 521-9402 - (773) 521-9499 | 80 |
| (773) 521-95** | (773) 521-9500 - (773) 521-9598 | 80 |
| (773) 521-96** | (773) 521-9601 - (773) 521-9699 | 79 |
| (773) 521-97** | (773) 521-9700 - (773) 521-9798 | 60 |
| (773) 521-98** | (773) 521-9800 - (773) 521-9899 | 53 |
| (773) 521-99** | (773) 521-9900 - (773) 521-9965 | 4 |
US Phone Directory: (773) 521-9***
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