| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 227-30** | (773) 227-3000 - (773) 227-3095 | 77 |
| (773) 227-31** | (773) 227-3100 - (773) 227-3199 | 71 |
| (773) 227-32** | (773) 227-3200 - (773) 227-3299 | 72 |
| (773) 227-33** | (773) 227-3300 - (773) 227-3397 | 70 |
| (773) 227-34** | (773) 227-3400 - (773) 227-3497 | 62 |
| (773) 227-35** | (773) 227-3500 - (773) 227-3598 | 75 |
| (773) 227-36** | (773) 227-3600 - (773) 227-3699 | 71 |
| (773) 227-37** | (773) 227-3700 - (773) 227-3799 | 63 |
| (773) 227-38** | (773) 227-3800 - (773) 227-3899 | 72 |
| (773) 227-39** | (773) 227-3900 - (773) 227-3999 | 74 |
US Phone Directory: (773) 227-3***
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