| Company name | Reg. code |
|---|---|
| ORS123 OÜ kustutatud (former name Oristano OÜ) | 14515624 |
| ORS RECYCLING OÜ (former name Gugu.ee OÜ) | 14751945 |
| CRE8ORS OÜ | 12089152 |
| REXOZA OÜ (former name ORS Invest OÜ) | 14207957 |
| MR ORSA OÜ kustutatud | 12308660 |
| ORSUS OÜ | 16531647 |
| ORSEKA OÜ | 11651048 |
| ORSENT OÜ | 10058451 |
| ORSTEP OÜ kustutatud | 10408570 |
| ORSTAI OÜ kustutatud | 12455272 |
| ORSAKS OÜ | 12025956 |
| ORSUN TECH OÜ | 17418287 |
| ORSO POLARE OÜ | 16763036 |
| ORSC HOLDING OÜ | 14444551 |
| ORSANNA GRUPP OÜ kustutatud | 10887033 |
| ORSEMA BALTIC OÜ | 12712757 |
| ORSTED ESTONIA OÜ kustutatud | 16655364 |
| ÕRSAVA KALARETKED OÜ kustutatud | 16767092 |
| KENAMA OÜ (former name Orsotto OÜ) | 14903295 |
| ORSAI INTERNACIONAL OÜ | 16949999 |
| NOCCHIELNETA ORSODELSINNI OÜ (former name UKR-EST OÜ) | 16157620 |
| ORSOD TRAINING & CONSULTANCY OÜ | 16865133 |
| ÖRN OÜ | 12800898 |
| ORO OÜ | 14159460 |
| FRS OÜ | 12666632 |
| MRS OÜ | 12063908 |
| BRS OÜ | 14772410 |
| NRS OÜ | 14681535 |
| CRS OÜ | 12015395 |
| DRS 9 OÜ | 16566933 |
| OPS OÜ | 12026571 |
| ORC OÜ | 16933877 |
| ARS OÜ | 11922300 |
| IRS OÜ | 10619427 |
| ÖÖS OÜ | 16495860 |
| GRS 24 OÜ kustutatud | 14584051 |
| OPS42 OÜ | 14874292 |
| ORAS OÜ | 12487177 |
| OHS OÜ | 10116940 |
| GRS OÜ | 12143555 |
| LRS OÜ kustutatud | 12343225 |
| ÕIS OÜ | 14612474 |
| ORM OÜ | 10397122 |
| ORL OÜ | 14537133 |
| ORSON DAILY REAL ESTATE ADVISORS OÜ | 16838633 |
| NRS SCANDINAVIA OÜ (former name Miestic OÜ) | 14372567 |
| OPTION OMS OÜ kustutatud | 12147257 |
| ARS ENERGY OÜ kustutatud | 11509497 |
| HALLENGREN.ORG OÜ | 11717184 |
| HRS CAPITAL OÜ | 12863396 |