| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 637-80** | (773) 637-8000 - (773) 637-8095 | 66 |
| (773) 637-81** | (773) 637-8100 - (773) 637-8199 | 63 |
| (773) 637-82** | (773) 637-8201 - (773) 637-8298 | 62 |
| (773) 637-83** | (773) 637-8300 - (773) 637-8398 | 66 |
| (773) 637-84** | (773) 637-8401 - (773) 637-8499 | 64 |
| (773) 637-85** | (773) 637-8500 - (773) 637-8599 | 52 |
| (773) 637-86** | (773) 637-8600 - (773) 637-8698 | 75 |
| (773) 637-87** | (773) 637-8700 - (773) 637-8796 | 66 |
| (773) 637-88** | (773) 637-8800 - (773) 637-8894 | 43 |
| (773) 637-89** | (773) 637-8900 - (773) 637-8999 | 62 |
US Phone Directory: (773) 637-8***
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