| IP: | 138.100.15.87 |
| Country: | Spain (ES) |
| Region: | 29 |
| City: | Madrid |
| Latitude: | 40.4 |
| Longitude: | -3.6833 |
| Reverse DNS: | ribera.datsi.fi.upm.es |
| Class A: | 138 |
| Class B: | 138.100 |
| Class C: | 138.100.15 |
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