| Company name | Reg. code |
|---|---|
| COPIER OÜ | 14526119 |
| COPIER GROUP OÜ | 12845642 |
| COPIER GROUP EU OÜ | 16724194 |
| 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 |
| HR COPER OÜ | 14161994 |
| COPER RIBISKY OÜ kustutatud | 10844911 |
| COPPER AND BLUE OÜ | 16162472 |
| THE COPPER COMPANY OÜ kustutatud | 14997416 |
| ALPHA-COPTER.AERO OÜ | 16851349 |
| HS COPPER INVESTMENT OÜ | 17253705 |
| COPERA OÜ kustutatud | 11285922 |
| COPIENE OÜ | 17393788 |
| COPEES OÜ | 11236119 |
| COPPERY OÜ | 11036366 |
| COPOWER OÜ | 10950501 |
| COPRUR PROJECTS INTERNATIONAL OÜ kustutatud (former name CPU Projects International OÜ) | 12628235 |
| CONDER OÜ | 16410777 |
| COOKER OÜ kustutatud | 14678875 |
| COVIAR OÜ | 17154836 |
| COUPLER OÜ | 16358471 |
| CORDER OÜ kustutatud | 10737308 |
| BOPPER OÜ | 16942158 |
| COWNER OÜ (former name CyberProtection OÜ) | 14837351 |
| COURIER OÜ kustutatud (former name EcologyPro OÜ) | 14495597 |
| COURIER OÜ kustutatud | 12627615 |
| CAWIER OÜ | 17353197 |
| CYPHER OÜ kustutatud | 14626039 |
| CONIERY OÜ | 10401763 |
| COINER OÜ kustutatud | 14404052 |
| CONFER OÜ | 11990566 |
| BONIER OÜ (former name Kelo Grupp OÜ) | 11165253 |
| COLLIER OÜ kustutatud | 11921757 |
| COVIAR OÜ kustutatud | 12450300 |
| DOFIER OÜ | 10418350 |
| CUVIER OÜ | 14980967 |
| COMSER OÜ | 10060492 |
| COTTER OÜ kustutatud | 11451254 |
| COVIEX OÜ | 10320119 |
| CONIFER OÜ | 11003504 |
| CIPHER CONSULTANTS OÜ | 14457989 |
| SEA COURIER OÜ | 16125287 |
| CORNER FINANCES OÜ | 12976479 |
| BREW CORNER OÜ | 16756214 |
| COOPER MANAGEMENT OÜ | 16804456 |
| COACHING CORNER OÜ | 16713311 |
| COOLER SERVICE OÜ | 16100821 |
| AVANT-COURIER OÜ | 11309679 |