| Company name | Reg. code |
|---|---|
| RAINER KAINE OÜ | 17414579 |
| RAINE ART OÜ | 16305380 |
| LEITNANT ALDO RAINE OÜ | 16890527 |
| ARHITEKTIBÜROO RAINE KARP OÜ | 10076205 |
| MAAHÕNGU MAITSED OÜ (former name Maine Vakk OÜ) | 12515790 |
| SHERHAN OÜ (former name Eesteem OÜ) | 16160007 |
| EDUSISSTA OÜ (former name Papa House OÜ) | 16091306 |