| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (312) 776-40** | (312) 776-4003 - (312) 776-4034 | 2 |
| (312) 776-41** | (312) 776-4124 - (312) 776-4191 | 3 |
| (312) 776-42** | (312) 776-4210 - (312) 776-4295 | 4 |
| (312) 776-43** | (312) 776-4300 - (312) 776-4396 | 3 |
| (312) 776-44** | (312) 776-4403 - (312) 776-4467 | 6 |
| (312) 776-45** | (312) 776-4508 - (312) 776-4598 | 5 |
| (312) 776-46** | (312) 776-4629 - (312) 776-4648 | 3 |
| (312) 776-47** | (312) 776-4722 - (312) 776-4765 | 5 |
| (312) 776-48** | (312) 776-4815 - (312) 776-4836 | 4 |
| (312) 776-49** | (312) 776-4956 - (312) 776-4982 | 5 |
US Phone Directory: (312) 776-4***
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