| Company name | Reg. code |
|---|---|
| ALTON OÜ | 14544057 |
| ALTON INVEST OÜ (former name GOODLIFE INVEST OÜ) | 12917241 |
| ALTON MANAGEMENT OÜ kustutatud | 12834207 |
| ALTONA DESIGN OÜ kustutatud | 12612151 |
| ALTONA BALTIC OÜ | 10825670 |
| ALTYN OÜ kustutatud | 12912735 |
| ALTOR OÜ | 11204912 |
| ALTRON OÜ kustutatud | 10314797 |
| ALTOM OÜ | 12066889 |
| ALTOS OÜ | 11588568 |
| ALTO OÜ | 10782328 |
| ALTAN TEAM OÜ | 11352877 |
| ALTOS DESIGNS OÜ | 17254029 |
| ALTIN ARENDUSE OÜ (former name Putukaväilade Arenduse OÜ) | 17269189 |
| ALTOS ENGINEERING OÜ | 12494740 |
| ALTYN-TARVAS OÜ kustutatud | 12329225 |
| ALTOS TEED OÜ | 12967894 |
| ALTOR-SAN OÜ | 10183941 |
| ALTIN KINNISVARA OÜ | 17218134 |
| ALTOR TRANSPORT OÜ | 14790023 |
| ALTAN PLUS OÜ | 11304743 |
| ALTAN TENGER OÜ | 14249068 |
| PALO ALTO OÜ | 12556564 |
| ALTO RESTO OÜ | 16869616 |
| ALTO CARSERVICE OÜ | 11644443 |
| ALTO SERVICE OÜ kustutatud | 11116125 |
| ALTO SOOJUS OÜ | 10167579 |
| ALTO EHITUS OÜ | 11227882 |
| BAIRRO ALTO INVESTMENTS OÜ kustutatud | 14094476 |
| PALO ALTO CLUB OÜ | 14827861 |
| EST ALTO GRUPP OÜ kustutatud | 12884240 |
| ALNOS OÜ (former name Alten OÜ) | 14100001 |
| ALTONDOR OÜ kustutatud | 12296603 |
| ALTONEX GRUPP OÜ | 12346548 |
| LEGASSET OÜ (former name AltonaDigitalExchange OÜ) | 14870443 |
| DALTON OÜ | 12485422 |
| SALTON OÜ kustutatud | 10581179 |
| WALTON OÜ kustutatud | 11775336 |
| ALFON OÜ | 14509368 |
| ALVON OÜ | 16962646 |
| ALGON OÜ | 14496648 |
| HALTON OÜ (former name OÜ PROFISA PARTNER) | 11594327 |
| ACTON OÜ kustutatud | 14111849 |
| MALTON OÜ | 12545495 |
| ALKON DYNAMICS OÜ kustutatud | 14429698 |
| ASTON INTERIÖR OÜ | 14039690 |
| AKTON BALTIC OÜ kustutatud | 11691183 |
| ELTON INVEST OÜ | 10978126 |
| ALBON GROUP OÜ | 11509161 |
| ALGON TRANSPORT OÜ | 14384760 |