| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 871-30** | (312) 871-3008 - (312) 871-3096 | 6 |
| (312) 871-31** | (312) 871-3114 - (312) 871-3197 | 7 |
| (312) 871-32** | (312) 871-3212 - (312) 871-3281 | 8 |
| (312) 871-33** | (312) 871-3309 - (312) 871-3398 | 10 |
| (312) 871-34** | (312) 871-3410 - (312) 871-3475 | 5 |
| (312) 871-35** | (312) 871-3514 - (312) 871-3598 | 11 |
| (312) 871-36** | (312) 871-3605 - (312) 871-3697 | 8 |
| (312) 871-37** | (312) 871-3707 - (312) 871-3790 | 9 |
| (312) 871-38** | (312) 871-3801 - (312) 871-3886 | 14 |
| (312) 871-39** | (312) 871-3911 - (312) 871-3962 | 6 |
US Phone Directory: (312) 871-3***
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