| Company name | Reg. code |
|---|---|
| HOOLDEST OÜ | 16812728 |
| HOOLEST OÜ | 16019817 |
| HOOLEST NÕUSTAMISTEENUSED OÜ | 16443308 |
| HOOLMETT OÜ kustutatud | 10199296 |
| HOOLDUSEST OÜ | 16841144 |
| HOOLDUSE24 OÜ | 14205319 |
| HOOLDEKS OÜ | 16710270 |
| HOOLDUS OÜ | 10954143 |
| 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 |
| HOOPEST OÜ | 16433824 |
| RADIX HOOLDUSE OÜ kustutatud | 10540200 |
| RELTARA HOOLDUSE OÜ kustutatud | 10557034 |
| EWAY HOOLDUSE OÜ | 11404657 |
| HAABERSTI HOOLDUSE OÜ | 16450260 |
| SR HOOLDUSE OÜ kustutatud | 12172090 |
| HAMI HOOLDUSE OÜ | 12886693 |
| AABER HOOLDUSE OÜ | 10845164 |
| SVANDRE HOOLDUSE OÜ | 12976385 |
| INVESTEERINGUTE HOOLDUSE OÜ | 10345027 |
| PLM HOOLDUSE OÜ | 10258231 |
| KÄRNER HOOLDUSE OÜ | 14460998 |
| LM HOOLDUSE OÜ (former name PolarQuality OÜ) | 14135867 |
| MAHUTI HOOLDUSE OÜ | 17336804 |
| HOOLDUSE EHITUS OÜ kustutatud | 11443344 |
| PEIMAR HOOLDUS OÜ | 14053253 |
| VELIAL HOOLDUS OÜ kustutatud | 12363825 |
| KVKTORU HOOLDUS OÜ | 16842267 |
| SOOJUS & HOOLDUS OÜ kustutatud | 11322681 |
| 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 |
| HK HOOLDUS OÜ | 12098814 |
| MANTEGO HOOLDUS OÜ | 14361227 |
| MAVEN HOOLDUS OÜ | 14459328 |
| HELMEN HOOLDUS OÜ (former name Helmen Hooldus UÜ) | 14932641 |
| ALFATOM HOOLDUS OÜ | 17118958 |
| PRISTIS HOOLDUS OÜ | 16164100 |
| CRYSTAL HOOLDUS OÜ (former name Quattromax OÜ) | 14322188 |