| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 523-00** | (773) 523-0000 - (773) 523-0097 | 52 |
| (773) 523-01** | (773) 523-0100 - (773) 523-0196 | 64 |
| (773) 523-02** | (773) 523-0200 - (773) 523-0298 | 57 |
| (773) 523-03** | (773) 523-0300 - (773) 523-0399 | 58 |
| (773) 523-04** | (773) 523-0400 - (773) 523-0498 | 60 |
| (773) 523-05** | (773) 523-0500 - (773) 523-0598 | 64 |
| (773) 523-06** | (773) 523-0601 - (773) 523-0699 | 57 |
| (773) 523-07** | (773) 523-0700 - (773) 523-0798 | 64 |
| (773) 523-08** | (773) 523-0800 - (773) 523-0899 | 59 |
| (773) 523-09** | (773) 523-0900 - (773) 523-0998 | 64 |
US Phone Directory: (773) 523-0***
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