| Company name | Reg. code |
|---|---|
| HOOLIN OÜ | 16040214 |
| HOOLING HOLDING OÜ | 16224055 |
| HOOLIB OÜ | 11368660 |
| HOOLINGI OÜ (former name Elwotartu OÜ) | 14262407 |
| HOOLIV TEADLIKKUS OÜ | 17455414 |
| HOTMAN HOOLIB OÜ | 17053118 |
| HOOLIV SÕIDUÕPE OÜ | 16588455 |
| HOOLIB GRUPP OÜ (former name Toitlustus Grupp OÜ) | 11716799 |
| HOOLIV TEGIJA OÜ | 12909164 |
| HOOLIV HETK OÜ | 17370729 |
| HOOLIV HALJASTUS OÜ | 17074215 |
| HANNA HOOLIB OÜ | 16311104 |
| HELENA HOOLIB OÜ | 17347630 |
| HOOLIV KODU OÜ | 17366291 |
| HOOLIV APTEEK OÜ | 17029717 |
| HOOLI HEALTHCARE OÜ | 14531847 |
| LOOMEVUNK OÜ (former name Hooling Koolitused OÜ) | 14632407 |
| HOOLMAN OÜ | 14411296 |
| HOOLIGAN OÜ | 11966639 |
| HOOLAS OÜ kustutatud | 10200326 |
| MAILILIINEV OÜ (former name Hoolingu Tugila OÜ) | 14128850 |
| JTAPHOOLED OÜ (former name Hoovin OÜ) | 16963746 |
| EMOTION HOODIE OÜ | 16778658 |
| HOOLAS HANS OÜ | 12867336 |
| HOOLIGAN HAMLET OÜ | 14069538 |
| HOOLAS LAPS OÜ | 14744974 |
| MEIE HOOLIME OÜ | 14118780 |
| HOOLDE P&E OÜ | 17001943 |
| ALATSKIVI HOOLDE- JA PIKARAVIKESKUS OÜ kustutatud | 10353099 |
| TOOLIN OÜ | 16923250 |
| NOTFAIR OÜ (former name HOOLIV KEHA OÜ) | 12447137 |
| HOLLIN INVEST OÜ | 11327218 |
| OOLIN VARAHALDUS OÜ kustutatud | 16109118 |
| COELIN OÜ | 16445336 |
| ESOLIN OÜ | 14900084 |
| HODLIX OÜ kustutatud | 16159330 |
| HODLING OÜ kustutatud | 16362745 |
| HOLLIC OÜ kustutatud | 10734223 |
| DIOLIN OÜ | 14048128 |
| AROLIN OÜ | 17407906 |
| FOOLIX OÜ | 10849357 |
| HOOVEIN OÜ | 17174508 |
| HOOVON OÜ | 17005941 |
| HOLINI OÜ (former name Analytics Nomad OÜ) | 12983019 |
| HOLEIN1 OÜ | 16099058 |
| EMOLIN OÜ | 12399102 |
| HOOLPY OÜ | 16931211 |
| HEJLIN OÜ kustutatud | 14796929 |
| COOLIO OÜ | 17251769 |
| GOBLIN OÜ | 12670022 |