| Company name | Reg. code |
|---|---|
| WALLENIUM OÜ | 11267344 |
| WALLENIUS SOL OÜ (former name Mann Lines OÜ) | 10893447 |
| MILLENIUM OÜ | 14027770 |
| ALLENTUM OÜ | 14803843 |
| MELLENIUM CONSULTING OÜ | 17279791 |
| E-MILLENIUM OÜ kustutatud | 10414837 |
| A91 OÜ (former name Digital Millenium OÜ) | 14580426 |
| ESSENCE MILLENNIUM OÜ kustutatud (former name Essence Millenium OÜ) | 12929037 |
| MILLENNIUM PROPERTY OÜ (former name Millenium Property OÜ) | 12942517 |
| FL510 OÜ (former name Millenium Jet Management OÜ) | 16506517 |