| Company name | Reg. code |
|---|---|
| AVIATRIUM OÜ | 17326639 |
| ANVIAARIUM OÜ | 14901758 |
| VIARIUM METAVERSE OÜ kustutatud | 16417972 |
| AATRIUM APARTMENTS OÜ | 14566389 |
| AATRIUM KINNISVARA OÜ (former name Kaanon OÜ) | 12414528 |
| AATRIUM GRUPP OÜ | 10486392 |
| AATRIUM EHITUS OÜ | 14339601 |
| KAANON OÜ kustutatud (former name OÜ Aatrium Kinnisvara) | 14567012 |