| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 783-40** | (312) 783-4033 - (312) 783-4094 | 6 |
| (312) 783-41** | (312) 783-4163 - (312) 783-4170 | 2 |
| (312) 783-42** | (312) 783-4201 - (312) 783-4273 | 6 |
| (312) 783-43** | (312) 783-4316 - (312) 783-4393 | 3 |
| (312) 783-44** | (312) 783-4450 - (312) 783-4491 | 3 |
| (312) 783-45** | (312) 783-4551 - (312) 783-4599 | 4 |
| (312) 783-46** | (312) 783-4600 - (312) 783-4645 | 4 |
| (312) 783-47** | (312) 783-4733 - (312) 783-4787 | 6 |
| (312) 783-48** | (312) 783-4822 - (312) 783-4894 | 5 |
| (312) 783-49** | (312) 783-4963 - (312) 783-4982 | 2 |
US Phone Directory: (312) 783-4***
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