| Company name | Reg. code |
|---|---|
| HALO OÜ | 16383977 |
| HALO ER OÜ kustutatud | 10340665 |
| HALO SALT OÜ kustutatud | 12545555 |
| HALO PUMBAD OÜ | 10281614 |
| HALO STUDIO OÜ | 14738927 |
| HALO CREATIVE OÜ | 16502778 |
| HALO INSIGHTS OÜ | 17436090 |
| HALO KIRJASTUS OÜ | 10943642 |
| HALO SOLUTIONS OÜ | 12182302 |
| HALOVISIO OÜ (former name HALO Vision OÜ) | 14450925 |
| FURMASTERPIECE OÜ kustutatud (former name Halo Baar OÜ) | 14916955 |
| HALOM OÜ | 16561678 |
| HALCO OÜ | 10313527 |
| HALEO OÜ | 14292971 |
| HALG OÜ kustutatud | 16343943 |
| HALL OÜ | 11834145 |
| HALS OÜ | 10208842 |
| HALI OÜ | 17001593 |
| HALM OÜ | 16677242 |
| HALPO OÜ kustutatud | 10049591 |
| HALON AND REFRIGERANT SERVICES OÜ | 14550158 |
| HALL RUUM OÜ | 17108718 |
| FINEST-HALL OÜ kustutatud | 12738260 |
| TRADE HALL OÜ | 12510870 |
| HALF DAY OÜ | 16740733 |
| NII HALL OÜ kustutatud | 14831816 |
| TOOLAMAA HALG OÜ | 17198207 |
| HALL MAJA OÜ | 14549965 |
| HALL DISAIN OÜ | 12170842 |
| HALU VENTURES OÜ | 14590353 |
| HALL TRADE OÜ | 16414146 |
| HALLO COSMOS OÜ (former name Tenementum OÜ) | 16004201 |
| HALL LIND OÜ | 17174336 |
| HALL MEX OÜ kustutatud | 12453221 |
| HK HALL OÜ | 10650897 |
| VOLTA HALL OÜ | 17029574 |
| HALL AJU OÜ | 16874853 |
| HALS INTERIORS OÜ | 10935743 |
| HALK EHITUS OÜ | 16675378 |
| HALG SALES OÜ kustutatud | 16016546 |
| AHJA HALG OÜ | 16975979 |
| HALF FROG OÜ | 12961466 |
| HALL RUUT OÜ | 16400486 |
| HALL PINK OÜ | 14473966 |
| TUME HALL OÜ | 11547977 |
| HALA DIGITAL OÜ | 14276473 |
| HALL LINN OÜ | 12102059 |
| CB-HALL OÜ kustutatud | 10113248 |
| BUSINESS HALL OÜ kustutatud | 12115429 |
| OMA HALG OÜ | 14891344 |