| Merchant | Domain | Country | Program Approval |
|---|---|---|---|
| ottodesignworks.com | Not Listed | Open | |
| ottomanhands.com | Not Listed | Open | |
| ottonova.de | Not Listed | Open | |
| ottopay.com | Not Listed | Open | |
| otty.com | Multiple | Open | |
| otumm.com | Not Listed | Open | |
| otus.ru | Not Listed | Open | |
| ou.com.br | Not Listed | Open | |
| yumpsoft.com | Multiple | Open | |
| ouandme.com | Not Listed | Open |