| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 434-40** | (773) 434-4000 - (773) 434-4099 | 71 |
| (773) 434-41** | (773) 434-4102 - (773) 434-4199 | 74 |
| (773) 434-42** | (773) 434-4200 - (773) 434-4298 | 77 |
| (773) 434-43** | (773) 434-4300 - (773) 434-4399 | 76 |
| (773) 434-44** | (773) 434-4400 - (773) 434-4499 | 71 |
| (773) 434-45** | (773) 434-4500 - (773) 434-4598 | 80 |
| (773) 434-46** | (773) 434-4600 - (773) 434-4699 | 79 |
| (773) 434-47** | (773) 434-4700 - (773) 434-4799 | 86 |
| (773) 434-48** | (773) 434-4800 - (773) 434-4899 | 78 |
| (773) 434-49** | (773) 434-4903 - (773) 434-4998 | 79 |
US Phone Directory: (773) 434-4***
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