| IP: | 66.72.121.77 |
| Country: | United States (US) |
| Region: | IL |
| City: | Chicago |
| Latitude: | 41.8675 |
| Longitude: | -87.6744 |
| Area code: | 312 |
| Reverse DNS: | adsl-66-72-121-77.dsl.chcgil.ameritech.net |
| Class A: | 66 |
| Class B: | 66.72 |
| Class C: | 66.72.121 |
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