| Company name | Reg. code |
|---|---|
| CELSUS OÜ | 12833314 |
| CELSUS ADVISORY GROUP OÜ kustutatud | 14573834 |
| CELSUS ACADEMIC CONSULTANCY SERVICES OÜ | 14141454 |
| 21 CELSIUS OÜ kustutatud | 16700998 |
| CELSIUS TICKETING OÜ (former name Celsius Investments Estonia OÜ) | 12527250 |
| CELSIUS HOLDING OÜ kustutatud | 12937723 |
| CELSIUS HEALTHCARE OÜ | 10997069 |
| CELPOS OÜ | 17297091 |
| CELIAS OÜ | 14133012 |
| CELSIN OÜ | 16353143 |
| CELSIUM OÜ | 12787821 |
| CELTIS FINANCE OÜ | 11312139 |
| SYNBASE OÜ (former name OÜ Celsius Data) | 14011154 |
| GAUDIUM CENSUS OÜ | 17385563 |
| MEELSUS OÜ | 16370058 |
| PULSUS OÜ | 14509658 |
| HELGUS OÜ | 12924608 |
| ELUSUS OÜ | 14793145 |
| CERTUS OÜ | 10933069 |
| BELLUS OÜ | 12745923 |
| CURSUS OÜ | 12468961 |
| HEPSUS OÜ kustutatud | 10496309 |
| MELSAS OÜ | 16832228 |
| BELOUS OÜ | 14851658 |
| SELGUS OÜ | 12154369 |
| MELSUM OÜ | 10289680 |
| MELIUS OÜ | 12191318 |
| DELIUS OÜ | 12833811 |
| CEDRUS OÜ kustutatud | 12022834 |
| COENSUS OÜ kustutatud | 14404758 |
| CERASUS OÜ | 14796801 |
| CETTUS OÜ | 16493915 |
| CATSUS OÜ | 11168955 |
| RERSUS OÜ | 14789617 |
| HELDUS OÜ | 16286866 |
| CERESUS OÜ | 12135308 |
| BELSUN OÜ | 14396846 |
| CERTUS INVEST OÜ | 11221678 |
| MELIUS RETAIL OÜ | 14625790 |
| CERTUS TECTUM OÜ kustutatud | 11946341 |
| MELIUS LEGAL OÜ | 17392949 |
| MELRUS SERVICE OÜ | 14222603 |
| HELGUS TUBA OÜ | 17441435 |
| AELIUS-ASSOCIATES OÜ | 16650220 |
| BELLUS CREATIVE OÜ | 16115589 |
| NELIUS VAAR OÜ | 10422127 |
| BELLUS FURNITURE OÜ (former name Bellus Furnitur) | 10229672 |
| CARSUS LAB OÜ | 10888512 |
| MELIUS GRUPP OÜ kustutatud | 10541624 |
| HELPUS PLUSS OÜ kustutatud | 10453292 |