| Domain | Indexed | External Links |
|---|---|---|
 okstate.edu | O | 1 |
 oxnardcollege.edu | O | 2 |
 ocpaonline.org | X | 0 |
 oakland.edu | O | 0 |
 ougrizzlies.com | X | 1 |
 oualumni.com | X | 1 |
 oakton.edu | O | 1 |
 oberlin.edu | O | 1 |
 odu.edu | X | 1 |
 odusports.com | X | 1 |
 oduvillage.com | X | 0 |
 oglethorpe.edu | O | 0 |
 ohio.edu | X | 4 |
 ohioalumni.org | X | 0 |
 onca.org | O | 0 |
 ohio.edux | X | 1 |
 ohiobobcats.com | O | 0 |
 ohlone.edu | O | 0 |
 okbu.edu | O | 0 |
 obubison.com | X | 0 |