| Phone Prefix | Range | Phones Recorded |
|---|---|---|
| (773) 631-20** | (773) 631-2000 - (773) 631-2099 | 54 |
| (773) 631-21** | (773) 631-2100 - (773) 631-2199 | 76 |
| (773) 631-22** | (773) 631-2200 - (773) 631-2299 | 74 |
| (773) 631-23** | (773) 631-2300 - (773) 631-2399 | 66 |
| (773) 631-24** | (773) 631-2400 - (773) 631-2499 | 71 |
| (773) 631-25** | (773) 631-2501 - (773) 631-2599 | 60 |
| (773) 631-26** | (773) 631-2600 - (773) 631-2699 | 63 |
| (773) 631-27** | (773) 631-2700 - (773) 631-2799 | 69 |
| (773) 631-28** | (773) 631-2800 - (773) 631-2899 | 67 |
| (773) 631-29** | (773) 631-2900 - (773) 631-2999 | 75 |
US Phone Directory: (773) 631-2***
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