| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 401-90** | (312) 401-9009 - (312) 401-9090 | 9 |
| (312) 401-91** | (312) 401-9109 - (312) 401-9191 | 10 |
| (312) 401-92** | (312) 401-9205 - (312) 401-9260 | 8 |
| (312) 401-93** | (312) 401-9310 - (312) 401-9333 | 5 |
| (312) 401-94** | (312) 401-9431 - (312) 401-9469 | 5 |
| (312) 401-95** | (312) 401-9523 - (312) 401-9588 | 6 |
| (312) 401-96** | (312) 401-9601 - (312) 401-9695 | 10 |
| (312) 401-97** | (312) 401-9700 - (312) 401-9772 | 8 |
| (312) 401-98** | (312) 401-9800 - (312) 401-9886 | 11 |
| (312) 401-99** | (312) 401-9914 - (312) 401-9990 | 6 |
US Phone Directory: (312) 401-9***
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