| Company name | Reg. code |
|---|---|
| ASTOL OÜ | 12849663 |
| ASTOR OÜ | 14708079 |
| ASTON INTERIÖR OÜ | 14039690 |
| ASTEL ENERGY OÜ (former name Asteltech Energy OÜ) | 17055525 |
| ASTON KAPITAL OÜ | 14176719 |
| ASTEL EST OÜ | 14410492 |
| ASTOR SERVICE OÜ | 12877346 |
| ASTOM-T OÜ kustutatud (former name MOTOTRADE PROJECTS OÜ) | 12877889 |
| ASTAL INVEST OÜ (former name Astalehitus OÜ) | 16432351 |
| ASTON SYNTHETICS OÜ | 14131711 |
| ASTON EHITUS OÜ | 10065526 |
| ASTO AIAND OÜ | 10391071 |
| ASTL CONSULTING OÜ kustutatud | 14588285 |
| ASTEL GARDEN GROUP OÜ | 16346605 |
| ASTOLINK OÜ | 10101334 |
| ABEOKUTA SURULERE OÜ kustutatud (former name Astor Müüritööd OÜ) | 14810913 |
| OPPORTUNITY OÜ kustutatud (former name ASTON TECHNOLOGIES OÜ) | 16044028 |
| ASTONCAP OÜ (former name ASTON TECHNOLOGIES OÜ) | 16046323 |
| SWEDKRAV FÖRENING OÜ (former name Astel Modular OÜ) | 12441488 |
| LIGAMBA KAPULANDA OÜ (former name Astor betoonitood OÜ) | 14801867 |
| DIKIURU JIRIBAM OÜ (former name ASTOR INVEST OÜ) | 14403144 |
| ASERON MAJAD OÜ kustutatud (former name Astel House OÜ) | 12651866 |
| KODUMAA MAJAD OÜ kustutatud (former name Astel Modern Homes OÜ) | 11296469 |
| ROMA OÜ (former name Tihendimeister OÜ) | 14223614 |
| ATTOL OÜ | 17301792 |
| ASKOL OÜ | 16873196 |
| AHTOL-SAUGA OÜ kustutatud | 10505059 |
| ASKOL HEALTH OÜ | 17084604 |
| ESTOL GRUPP OÜ | 14135608 |
| ASSOL EST OÜ | 11944269 |
| ANTOL HOOLDUS OÜ | 12792609 |