| Company name | Reg. code |
|---|---|
| ARKEN OÜ | 17205456 |
| ARKEL OÜ | 16140973 |
| ARKEA OÜ kustutatud | 16353551 |
| ARKER OÜ (former name Jagelski Group OÜ) | 12286987 |
| ÄRKEL OÜ | 12886530 |
| ARKET OÜ (former name Automove OÜ) | 14751388 |
| ARKIN OÜ (former name ARKIN EHITUS) | 12175331 |
| ARKON CORPORATION OÜ | 17469221 |
| ARKIN TRADING OÜ | 11613349 |
| ARKAN CAPITAL OÜ kustutatud | 12656415 |
| ARKIN AM OÜ kustutatud | 10248267 |
| ARKER INVEST OÜ | 11444591 |
| ARKIN EHITUS OÜ | 14618436 |
| ARKER TRANSPORT OÜ | 12409935 |
| ARKON AKANTUS OÜ | 10723981 |
| ARKE FARMID OÜ | 16796389 |
| ARKE EHITUS OÜ | 12188345 |
| ARKIN SOFTWARE STUDIO OÜ | 17357172 |
| ÄRKAN JA MÄRKAN OÜ | 14746714 |
| ARKENIA OÜ | 16602184 |
| ARKENDAL OÜ | 17413166 |
| ARKENTIX OÜ kustutatud | 10618327 |
| ARKENBIT OÜ | 17086000 |
| ARKENTON OÜ kustutatud | 14347210 |
| ARKENSTONE OÜ | 17110247 |
| HAKUPU NAMUKULU OÜ (former name Arkan Ehitus OÜ) | 14267403 |
| ARSEN OÜ | 16661206 |
| ARBEN OÜ | 11288234 |
| MARKEN OÜ | 12086142 |
| JARKEN OÜ | 14141603 |
| ASKEN OÜ (former name Askel OÜ) | 12080398 |
| ARLEN OÜ | 12594855 |
| ARTEN OÜ kustutatud | 10071188 |
| LARKEN OÜ | 16983677 |
| ASKEN OÜ kustutatud | 10679493 |
| ARTEN OÜ | 16603999 |
| AKEN+ OÜ | 14388203 |
| AKEN24 OÜ | 12175673 |
| MARKEN CAPITAL OÜ | 16268029 |
| ARWEN HOLDING OÜ | 10991517 |
| ARLEN TRADING OÜ kustutatud | 10667685 |
| ARDEN CONSULT OÜ | 10729417 |
| ARLEN INVEST OÜ | 14923748 |
| ARDEN TAXO OÜ | 16894175 |
| AKKEN LAEVAREMONT OÜ kustutatud | 12216403 |
| ARDEN MARINE OÜ (former name Power For Men OÜ) | 16918243 |
| RAKEN GRUPP OÜ | 14863489 |
| BARKEN KAPITAL OÜ | 12044385 |
| AHKEN GRUPP OÜ (former name Top100 Holding OÜ) | 14745034 |
| ARVEN DIGITAL OÜ | 16977760 |