| Merchant | Domain | Country | Program Approval |
|---|---|---|---|
| ocanada.com.tw | Not Listed | Open | |
| omybagamsterdam.com | Not Listed | Open | |
| opositiv.com | Not Listed | Open | |
| ovoyages.com | Not Listed | Open | |
| oliveandcrate.com | Not Listed | Open | |
| oo-software.com | Multiple | Open | |
| oneill.com | Multiple | Open | |
| oreilly.com | Multiple | Open | |
| orest.co.uk | Not Listed | Open | |
| ostore.com.br | Not Listed | Open |