| Company name | Reg. code |
|---|---|
| MONTEIRON OÜ (former name Monteiron UÜ) | 14876084 |
| MONTEROX OÜ kustutatud | 12822799 |
| MONTERAN OÜ | 10932673 |
| MONTEGRO OÜ | 10057923 |
| MONETRON OÜ (former name Moneenu OÜ) | 12835603 |
| MONTIERO GRUPP OÜ kustutatud (former name UÜ Montiero Grupp) | 12983433 |
| MONTELEON LEARNING AND CONSULTING OÜ kustutatud | 14637907 |
| MORTERON OÜ | 10795213 |