| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 405-70** | (312) 405-7000 - (312) 405-7094 | 8 |
| (312) 405-71** | (312) 405-7103 - (312) 405-7192 | 9 |
| (312) 405-72** | (312) 405-7205 - (312) 405-7278 | 7 |
| (312) 405-73** | (312) 405-7324 - (312) 405-7393 | 6 |
| (312) 405-74** | (312) 405-7414 - (312) 405-7473 | 4 |
| (312) 405-75** | (312) 405-7502 - (312) 405-7595 | 12 |
| (312) 405-76** | (312) 405-7602 - (312) 405-7659 | 9 |
| (312) 405-77** | (312) 405-7715 - (312) 405-7752 | 4 |
| (312) 405-78** | (312) 405-7801 - (312) 405-7892 | 8 |
| (312) 405-79** | (312) 405-7905 - (312) 405-7997 | 8 |
US Phone Directory: (312) 405-7***
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