| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 307-20** | (773) 307-2001 - (773) 307-2090 | 21 |
| (773) 307-21** | (773) 307-2101 - (773) 307-2199 | 18 |
| (773) 307-22** | (773) 307-2202 - (773) 307-2299 | 22 |
| (773) 307-23** | (773) 307-2301 - (773) 307-2399 | 15 |
| (773) 307-24** | (773) 307-2400 - (773) 307-2495 | 17 |
| (773) 307-25** | (773) 307-2505 - (773) 307-2597 | 21 |
| (773) 307-26** | (773) 307-2607 - (773) 307-2699 | 23 |
| (773) 307-27** | (773) 307-2715 - (773) 307-2793 | 18 |
| (773) 307-28** | (773) 307-2806 - (773) 307-2892 | 19 |
| (773) 307-29** | (773) 307-2900 - (773) 307-2998 | 25 |
US Phone Directory: (773) 307-2***
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