| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 427-80** | (773) 427-8000 - (773) 427-8098 | 63 |
| (773) 427-81** | (773) 427-8100 - (773) 427-8199 | 61 |
| (773) 427-82** | (773) 427-8200 - (773) 427-8299 | 65 |
| (773) 427-83** | (773) 427-8300 - (773) 427-8398 | 57 |
| (773) 427-84** | (773) 427-8400 - (773) 427-8499 | 55 |
| (773) 427-85** | (773) 427-8502 - (773) 427-8599 | 66 |
| (773) 427-86** | (773) 427-8601 - (773) 427-8698 | 53 |
| (773) 427-87** | (773) 427-8700 - (773) 427-8799 | 64 |
| (773) 427-88** | (773) 427-8800 - (773) 427-8897 | 51 |
| (773) 427-89** | (773) 427-8900 - (773) 427-8996 | 52 |
US Phone Directory: (773) 427-8***
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