| Company name | Reg. code |
|---|---|
| CAXTON OÜ | 12802395 |
| CANTON OÜ | 10846488 |
| MAXTON OÜ (former name Optimio OÜ) | 14198916 |
| MAXTON OÜ kustutatud | 11760567 |
| CARTON OÜ | 12149606 |
| PAXTON OÜ | 16506902 |
| PAXTON ASSETS OÜ | 11411284 |
| EST-CARTON OÜ | 11093217 |
| CANTON HOLDING OÜ kustutatud | 10460346 |
| TAXTON ESTONIA OÜ | 12002487 |
| CARBON-6 OÜ | 16145628 |
| CAPCON OÜ kustutatud | 14617572 |
| CAPITON OÜ | 12699413 |
| CASTAN OÜ | 14627642 |
| CARTOR OÜ | 14704093 |
| CARSTON OÜ | 10261598 |
| BACTON OÜ | 16040208 |
| AARTON OÜ | 12368171 |
| CARTIN OÜ | 10664114 |
| CALSTON OÜ | 11407808 |
| AXTRON OÜ (former name Axtron UÜ) | 14494164 |
| BRAXTON OÜ | 11057084 |
| CASPON OÜ | 16949315 |
| CAMION OÜ | 11235232 |
| CANTOO OÜ kustutatud | 16063149 |
| CANNON OÜ kustutatud | 14273457 |
| CALVON OÜ | 17433878 |
| CABRON OÜ kustutatud | 14567687 |
| CATION OÜ | 14415756 |
| CAPTOR OÜ | 14981585 |
| CARBON REDUCTION CARBON TRADING OÜ kustutatud | 16468142 |
| BARTON GLOBAL OÜ | 14298285 |
| CARBON FARMS OÜ kustutatud | 14911604 |
| CARBON GLOBAL OÜ (former name OneOakLabs OÜ) | 16303524 |
| CARBON INVESTMENT OÜ kustutatud | 12139080 |
| BAUTON PAINTING OÜ | 16618334 |
| CASTOR GROUP OÜ kustutatud | 12902038 |
| CANYON INVEST OÜ | 14080445 |
| CARSON TECHNOLOGIES OÜ | 16944559 |
| FOXCAP CARBON OÜ | 17215006 |
| CARTOP TRADING OÜ | 11334514 |
| CARBON.EE OÜ kustutatud | 11528559 |
| CARTOON CAFEES OÜ kustutatud | 14288051 |
| CASTOR-K OÜ | 10209563 |
| CARBON OFFSET OÜ | 16348030 |
| CASTOR WATCHES OÜ | 16528335 |
| CANYON DEVELOPMENT OÜ | 12534474 |
| CANTOR SOLUTIONS OÜ | 16504731 |
| CARBON LIFE OÜ | 17228405 |
| CARBON CRAB OÜ kustutatud | 12698603 |