| Company name | Reg. code |
|---|---|
| CYPHER OÜ kustutatud | 14626039 |
| CYPHERIT OÜ | 17095499 |
| CYPHERFY OÜ (former name OÜ Püü 7a) | 12099653 |
| CYPTERA OÜ | 16696541 |
| CYPHERHUB OÜ | 14496163 |
| CYPHERGUN OÜ | 17141868 |
| CYPHERECO OÜ kustutatud | 14508251 |
| CIPHER CONSULTANTS OÜ | 14457989 |
| CIPHER SYSTEMS OÜ | 12844192 |
| HYPHEN OÜ | 16041455 |
| COPIER OÜ | 14526119 |
| CPHERE OÜ kustutatud | 14188243 |
| SYPFER OÜ | 17031720 |
| CYBER46 OÜ | 17412617 |
| HYPER OÜ kustutatud | 12524257 |
| TYPER OÜ | 14623087 |
| COPLER GROUP OÜ | 12603755 |
| EST COPPER OÜ (former name Litcar OÜ) | 14054198 |
| COPTER CAPITAL OÜ kustutatud (former name Kaspair Helicopters OÜ) | 11325679 |
| COPPER & GREEN OÜ | 16265775 |
| COPIER GROUP OÜ | 12845642 |
| CAESAR CIPHER ADVANCED RESEARCH OÜ | 17405528 |
| CYBER MARQET OÜ (former name Altra Invest OÜ) | 12298387 |
| CYBER COMMERCE OÜ | 16946146 |
| CYBER VENTURES OÜ | 16610887 |
| CYBER TURG OÜ kustutatud | 16080455 |
| HR COPER OÜ | 14161994 |
| CYBER PATIO OÜ | 16633919 |
| CYBER TRADINGS OÜ (former name CYBERGUN DISTRIBUTION ESTONIA OÜ) | 16671647 |
| CYBER SYSTEM OÜ | 11049400 |
| CYBER PYRAMIDS OÜ | 16747617 |
| CYBER HERMES OÜ | 16295368 |
| LUNA CYBER OÜ kustutatud | 16885785 |
| CYBER PLANET OÜ | 14037478 |
| CYBER STRUGGLE OÜ | 14722429 |
| CYBER INVESTMENTS OÜ (former name Cyber Investments UÜ) | 16120657 |
| NANO CYBER OÜ | 16828095 |
| CYBER WEREWOLF OÜ | 16360982 |
| COPER RIBISKY OÜ kustutatud | 10844911 |
| CYBER HOPES OÜ | 16047133 |
| CYBER EYES OÜ | 17458714 |
| CYVER TECH OÜ | 17278834 |
| CYBER MUUN OÜ | 14376944 |
| TACTICAL CYBER OÜ | 14636078 |
| CYBER BALTICA OÜ | 17323842 |
| HYPER CONSULTING OÜ | 14540668 |
| CYBER ONBOARD OÜ | 17190915 |
| CYBER SECURITY OÜ kustutatud | 12214692 |
| CYBER SERVICE OÜ | 11689811 |
| HYPER ENERGY OÜ | 14222612 |