| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 922-30** | (312) 922-3000 - (312) 922-3097 | 30 |
| (312) 922-31** | (312) 922-3100 - (312) 922-3196 | 28 |
| (312) 922-32** | (312) 922-3200 - (312) 922-3279 | 22 |
| (312) 922-33** | (312) 922-3300 - (312) 922-3392 | 34 |
| (312) 922-34** | (312) 922-3400 - (312) 922-3498 | 34 |
| (312) 922-35** | (312) 922-3501 - (312) 922-3599 | 24 |
| (312) 922-36** | (312) 922-3600 - (312) 922-3696 | 24 |
| (312) 922-37** | (312) 922-3700 - (312) 922-3799 | 35 |
| (312) 922-38** | (312) 922-3800 - (312) 922-3899 | 28 |
| (312) 922-39** | (312) 922-3900 - (312) 922-3999 | 34 |
US Phone Directory: (312) 922-3***
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