| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 237-00** | (773) 237-0000 - (773) 237-0098 | 70 |
| (773) 237-01** | (773) 237-0100 - (773) 237-0199 | 69 |
| (773) 237-02** | (773) 237-0201 - (773) 237-0299 | 71 |
| (773) 237-03** | (773) 237-0300 - (773) 237-0399 | 73 |
| (773) 237-04** | (773) 237-0400 - (773) 237-0499 | 80 |
| (773) 237-05** | (773) 237-0500 - (773) 237-0599 | 77 |
| (773) 237-06** | (773) 237-0600 - (773) 237-0699 | 81 |
| (773) 237-07** | (773) 237-0700 - (773) 237-0798 | 75 |
| (773) 237-08** | (773) 237-0803 - (773) 237-0898 | 72 |
| (773) 237-09** | (773) 237-0900 - (773) 237-0999 | 75 |
US Phone Directory: (773) 237-0***
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