| Company name | Reg. code |
|---|---|
| COPERA OÜ kustutatud | 11285922 |
| HR COPER OÜ | 14161994 |
| COPER RIBISKY OÜ kustutatud | 10844911 |
| COPEES OÜ | 11236119 |
| COPULA OÜ | 16316314 |
| COPPERY OÜ | 11036366 |
| COPERNO OÜ kustutatud | 16321781 |
| COPEROF OÜ (former name I&L FinEstman Group OÜ) | 14308279 |
| COPODA OÜ | 16865825 |
| COPENRAT OÜ kustutatud | 11252911 |
| COPIER OÜ | 14526119 |
| COPALA HOLDING OÜ | 16654548 |
| COPECK OIL OÜ kustutatud | 12115085 |
| COPLER GROUP OÜ | 12603755 |
| EST COPPER OÜ (former name Litcar OÜ) | 14054198 |
| COPPER & GREEN OÜ | 16265775 |
| COPTER CAPITAL OÜ kustutatud (former name Kaspair Helicopters OÜ) | 11325679 |
| PASSIVE COPECK OÜ | 14142985 |
| COPIER GROUP OÜ | 12845642 |
| COPPER AND BLUE OÜ | 16162472 |
| THE COPPER COMPANY OÜ kustutatud | 14997416 |
| ALPHA-COPTER.AERO OÜ | 16851349 |
| HS COPPER INVESTMENT OÜ | 17253705 |
| COPIER GROUP EU OÜ | 16724194 |
| CODERA OÜ | 12926043 |
| UOPERA OÜ kustutatud | 16073998 |
| COMPERA OÜ | 14282640 |
| OPERA OÜ | 12048756 |
| CABALLERA OPERA OÜ | 17003505 |
| OPERA DESIGN OÜ | 11976750 |
| NARGEN OPERA OÜ | 11109757 |
| OPERA INVEST OÜ | 12620084 |
| OPERA RENAISSANCE OÜ kustutatud | 14646237 |
| CETERA OÜ | 16313095 |
| COBEGA OÜ | 11250639 |
| COGERE OÜ kustutatud | 12520420 |
| CODEYRA OÜ | 14409402 |
| CORPERO OÜ (former name Hyperloop OÜ) | 14921353 |
| COMPRA7 OÜ | 11727063 |
| ASPERA OÜ | 12419394 |
| COGNERA OÜ | 17301496 |
| CODEVA OÜ | 17130333 |
| COMPRA LEADS OÜ | 16540263 |
| CIRERA CONSULTING OÜ kustutatud | 12363430 |
| CONTRA LEGEM OÜ | 12168928 |
| COREDA (ESTONIA) OÜ kustutatud | 14113392 |
| ET CETERA OÜ | 14506795 |
| COMETA TRADING OÜ kustutatud | 12661528 |
| PER ASPERA OÜ | 11293749 |
| COOPER MANAGEMENT OÜ | 16804456 |