| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 631-00** | (773) 631-0000 - (773) 631-0098 | 73 |
| (773) 631-01** | (773) 631-0100 - (773) 631-0196 | 69 |
| (773) 631-02** | (773) 631-0201 - (773) 631-0299 | 69 |
| (773) 631-03** | (773) 631-0300 - (773) 631-0399 | 76 |
| (773) 631-04** | (773) 631-0400 - (773) 631-0499 | 72 |
| (773) 631-05** | (773) 631-0500 - (773) 631-0599 | 72 |
| (773) 631-06** | (773) 631-0600 - (773) 631-0698 | 73 |
| (773) 631-07** | (773) 631-0700 - (773) 631-0798 | 79 |
| (773) 631-08** | (773) 631-0800 - (773) 631-0899 | 65 |
| (773) 631-09** | (773) 631-0900 - (773) 631-0999 | 68 |
US Phone Directory: (773) 631-0***
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