| Company name | Reg. code |
|---|---|
| CROTON OÜ | 14319461 |
| CROTONE ENTERTEINMENTGROUP OÜ | 16838691 |
| CROFTON CAPITAL OÜ | 11150984 |
| CRONONE OÜ | 16453608 |
| CRONOS GRUPP OÜ kustutatud | 12863456 |
| PROTON INVEST OÜ kustutatud | 11968897 |
| PROTON ONE OÜ | 10722220 |
| CRETON SERVICES OÜ | 16550501 |
| VIDEO PROTON OÜ | 14593452 |
| CANTON OÜ | 10846488 |
| COTTON OÜ | 12424656 |
| BROOTON OÜ (former name Pixbloop OÜ) | 14982225 |
| CORTONA OÜ kustutatud | 14583962 |
| COREON OÜ | 17231695 |
| BRYTON OÜ (former name Integrad OÜ) | 14415176 |
| CRATONI OÜ | 10063326 |
| CAXTON OÜ | 12802395 |
| CARSTON OÜ | 10261598 |
| CRAYON OÜ | 11475137 |
| ARUTON OÜ | 14534082 |
| CORSON OÜ | 10006729 |
| CORTEN OÜ | 14624997 |
| CEROTOR OÜ (former name Cerotor UÜ) | 14287519 |
| AGROTON OÜ | 12715460 |
| CARTON OÜ | 12149606 |
| BROXON OÜ kustutatud | 10363502 |
| PROTON VENTURES ESTONIA OÜ kustutatud | 11392546 |
| CROWN OÜ | 11352593 |
| CROOF OÜ | 14734444 |
| CRONO OÜ kustutatud | 14874470 |
| OPTIMAPHARM ESTONIA OÜ (former name Crown CRO OÜ) | 12856444 |
| AGORA GAMEPLAY OÜ (former name Crown Finance OÜ) | 16533359 |
| CRETONE PALOMBARA OÜ | 12817114 |
| COTTON TRADE OÜ kustutatud | 12939403 |
| CRETAN INVEST OÜ | 17058185 |
| MAJENTA COTTON OÜ | 11522090 |
| CRYPTON LIMITED OÜ | 14570391 |
| CARTOON CAFEES OÜ kustutatud | 14288051 |
| COSTON CAPITAL OÜ kustutatud | 11191368 |
| COTONS KV OÜ | 10334618 |
| COTTON GROUP OÜ | 14156013 |
| CRETAN TOURS OÜ | 17174626 |
| CORTONA FX OÜ kustutatud | 12825852 |
| COTTON WOOL OÜ | 17402211 |
| EST-CARTON OÜ | 11093217 |
| BRUTON GROUP OÜ kustutatud | 10406298 |
| ARITON RV OÜ | 11357478 |
| CRYPTON NETWORK OÜ | 14314541 |
| BROTEN GROUP OÜ | 14928651 |
| COTTON WORLD OÜ | 14186089 |