| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 525-20** | (773) 525-2000 - (773) 525-2098 | 63 |
| (773) 525-21** | (773) 525-2100 - (773) 525-2199 | 56 |
| (773) 525-22** | (773) 525-2200 - (773) 525-2299 | 58 |
| (773) 525-23** | (773) 525-2300 - (773) 525-2399 | 73 |
| (773) 525-24** | (773) 525-2400 - (773) 525-2499 | 77 |
| (773) 525-25** | (773) 525-2500 - (773) 525-2599 | 73 |
| (773) 525-26** | (773) 525-2600 - (773) 525-2698 | 76 |
| (773) 525-27** | (773) 525-2700 - (773) 525-2798 | 72 |
| (773) 525-28** | (773) 525-2800 - (773) 525-2899 | 71 |
| (773) 525-29** | (773) 525-2900 - (773) 525-2997 | 70 |
US Phone Directory: (773) 525-2***
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