| Merchant | Domain | Country | Program Approval |
|---|---|---|---|
| store.sixnationsrugby.com | Not Listed | Open | |
| sixity.com | Multiple | Open | |
| sixityauto.com | Multiple | Open | |
| sixpad.com | Not Listed | Open | |
| sixpenny.com | Not Listed | Open | |
| sixstarcruises.co.uk | Not Listed | Open | |
| sixt.com | Multiple | Open | |
| sixt-neuwagen.de | Not Listed | Open | |
| sixt.co.uk | Multiple | Open | |
| sixt.com | Multiple | Open |