| Company name | Reg. code |
|---|---|
| PRISMAONE OÜ (former name PrismaOne UÜ) | 16746204 |
| PRISMANET OÜ (former name Prisma NET OÜ) | 12648723 |
| PRISMALINE OÜ (former name Prismaline UÜ) | 14458984 |
| PRISMATON OÜ | 10889842 |
| PRIMEONE OÜ kustutatud | 12527037 |
| PRIMEONE HOLDING OÜ | 16009658 |