| Company name | Reg. code |
|---|---|
| HOOLAS OÜ kustutatud | 10200326 |
| HOOLAS HANS OÜ | 12867336 |
| HOOLAS LAPS OÜ | 14744974 |
| HOOLUS OÜ | 17418672 |
| HOOLMAN OÜ | 14411296 |
| HOOLIN OÜ | 16040214 |
| HOOLDUS OÜ | 10954143 |
| HOOLPY OÜ | 16931211 |
| HOOLLAB OÜ | 17457488 |
| HOOLIB OÜ | 11368660 |
| HOOLEST OÜ | 16019817 |
| 24/7 HOOLDUS OÜ (former name 24/7 Hooldus UÜ) | 14168499 |
| 1-2-3 HOOLDUS OÜ kustutatud (former name 1-2-3 Hooldus UÜ) | 14248131 |
| HOOPIS OÜ kustutatud | 12600024 |
| HOOVUS OÜ | 12411108 |
| HOOHLA OÜ | 14398383 |
| HOORAY PARTNERS OÜ kustutatud | 16754020 |
| PEIMAR HOOLDUS OÜ | 14053253 |
| VELIAL HOOLDUS OÜ kustutatud | 12363825 |
| KVKTORU HOOLDUS OÜ | 16842267 |
| SOOJUS & HOOLDUS OÜ kustutatud | 11322681 |
| HOOLIV TEADLIKKUS OÜ | 17455414 |
| ORBIIT HOOLDUS OÜ (former name Hoshima OÜ) | 17218269 |
| ORBITA HOOLDUS OÜ kustutatud | 10423173 |
| LS HOOLDUS OÜ | 12635910 |
| VENSAN HOOLDUS OÜ | 12734492 |
| SANVEKAN HOOLDUS OÜ | 17362664 |
| WASSERFALL HOOLDUS OÜ (former name Wassefall Hooldus OÜ) | 17379363 |
| EHITUSARK HOOLDUS OÜ | 16733934 |
| VET HOOLDUS OÜ | 11376688 |
| LRP HOOLDUS OÜ (former name kisakõriabc OÜ) | 16827204 |
| TEHNOVÕRKUDE HOOLDUS OÜ | 14577447 |
| DENSAN HOOLDUS OÜ | 16480503 |
| ELBRUS HOOLDUS OÜ | 14693834 |
| HORE HOOLDUS OÜ (former name VALREKIIN OÜ) | 14223910 |
| JH HOOLDUS OÜ | 12742876 |
| HOTMAN HOOLIB OÜ | 17053118 |
| HK HOOLDUS OÜ | 12098814 |
| MANTEGO HOOLDUS OÜ | 14361227 |
| MAVEN HOOLDUS OÜ | 14459328 |
| HELMEN HOOLDUS OÜ (former name Helmen Hooldus UÜ) | 14932641 |
| HOOKAH CATERING OÜ | 14266262 |
| ALFATOM HOOLDUS OÜ | 17118958 |
| PRISTIS HOOLDUS OÜ | 16164100 |
| CRYSTAL HOOLDUS OÜ (former name Quattromax OÜ) | 14322188 |
| KHK HOOLDUS OÜ kustutatud | 16064769 |
| MASINSERV HOOLDUS OÜ | 17371249 |
| GEDOR HOOLDUS OÜ | 12816497 |
| PAIRAN HOOLDUS OÜ | 14364591 |
| TALLER HOOLDUS OÜ | 14577890 |