| Company name | Reg. code |
|---|---|
| ERIAL OÜ | 14528746 |
| ERIAL ARENDUS OÜ kustutatud (former name E-Radio OÜ) | 12482091 |
| ERIAL AUTOMAAILM OÜ (former name OFERTA INKASSO OÜ) | 12880420 |
| MINU VARA EHITUS OÜ (former name ERIAL KINNISVARA OÜ) | 12880472 |
| ERIALA OÜ kustutatud | 10613137 |
| VINGEBERTI KORISTUSFIRMA OÜ kustutatud (former name ERIAL EHITUS OÜ) | 14986430 |
| T.T ERIALA OÜ kustutatud | 12309518 |
| ERIAS OÜ | 17247443 |
| ERIAN OÜ | 11038721 |
| ENIAL OÜ | 12733423 |
| TRIAL OÜ | 12170339 |
| MERIAL OÜ | 17147457 |
| REIAL OÜ | 14957701 |
| ERTAL OÜ kustutatud | 10219685 |
| NERIAL OÜ | 16482521 |
| ERHAL OÜ | 16146214 |
| ERSAL OÜ | 16478488 |
| AERIAL OÜ | 11574661 |
| EMIAL OÜ | 16301353 |
| ERAL OÜ | 10945121 |
| TELEALARM OÜ (former name Erialainsener) | 12583478 |
| AERIAL GUARD OÜ kustutatud | 12597865 |
| KASK REIAL OÜ | 14822237 |
| TRIAL CONSULT OÜ | 11024601 |
| SERIAL INVESTOR OÜ kustutatud | 11154114 |
| ERTAL GRUPP OÜ (former name Tiim Emerald OÜ) | 12154984 |
| AERIAL ELEMENTAL OÜ | 17076533 |
| ARIAL BOLD OÜ (former name MJ Konsult OÜ) | 12050055 |
| SERIAL EXPERIMENTS OÜ kustutatud | 14059053 |
| ERTAL VO OÜ | 10860927 |
| EDIAL SÜSTEEMID OÜ | 10785887 |
| RIAL INKASSO OÜ kustutatud | 11021525 |
| RIAL GAMES OÜ kustutatud | 14053268 |
| ERMAL A.M. OÜ | 10157145 |
| REVERIE AERIAL ARTS OÜ | 12760839 |
| AERIAL INSPECTION SYSTEMS OÜ | 16943413 |
| TRIAL & EUREKA GLOBAL OÜ kustutatud | 14458599 |
| GAEA TRIAL ACCELERATION OÜ | 14626223 |
| RIAL MEAT EESTI OÜ (former name Viande Estonia OÜ) | 14374773 |
| TFS TRIAL FORM SUPPORT OÜ kustutatud | 11208436 |
| AKSA CORP OÜ (former name Krial OÜ) | 12610057 |
| AR METAL OÜ (former name Zerial Modified OÜ) | 12245899 |
| NODUSTRENT OÜ (former name AERIAL DANCE STUDIO OÜ) | 12576366 |