| Company name | Reg. code |
|---|---|
| JON & JONSON OÜ kustutatud | 10872178 |
| KJOON OÜ (former name Katkev Joon OÜ) | 14004935 |
| MMIDS OÜ (former name Joon Disainibüroos OÜ) | 12244500 |
| IKIGAI KINNISVARA OÜ (former name Joon Kinnisvara OÜ) | 12812170 |
| TENNISETREENER OÜ (former name OÜ M.A Tennis) | 14536690 |