| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 523-80** | (773) 523-8000 - (773) 523-8098 | 75 |
| (773) 523-81** | (773) 523-8101 - (773) 523-8198 | 68 |
| (773) 523-82** | (773) 523-8200 - (773) 523-8299 | 71 |
| (773) 523-83** | (773) 523-8302 - (773) 523-8398 | 73 |
| (773) 523-84** | (773) 523-8400 - (773) 523-8498 | 71 |
| (773) 523-85** | (773) 523-8500 - (773) 523-8599 | 68 |
| (773) 523-86** | (773) 523-8600 - (773) 523-8697 | 67 |
| (773) 523-87** | (773) 523-8700 - (773) 523-8797 | 72 |
| (773) 523-88** | (773) 523-8800 - (773) 523-8899 | 65 |
| (773) 523-89** | (773) 523-8900 - (773) 523-8999 | 61 |
US Phone Directory: (773) 523-8***
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