| Company name | Reg. code |
|---|---|
| ARKIMON OÜ | 17161569 |
| ARKASON OÜ kustutatud | 12600774 |
| ARKTRON OÜ kustutatud | 16302909 |
| ARKOLON OÜ | 11900876 |
| ARKMOR OÜ kustutatud | 16733414 |
| ARKOLON EHITUS OÜ | 16110908 |
| ARKIN OÜ (former name ARKIN EHITUS) | 12175331 |
| ARKMAN METALL OÜ | 11227586 |
| ARKON CORPORATION OÜ | 17469221 |
| ARKIN TRADING OÜ | 11613349 |
| ARKIN AM OÜ kustutatud | 10248267 |
| ARKIN EHITUS OÜ | 14618436 |
| ARKON AKANTUS OÜ | 10723981 |
| ARKIN SOFTWARE STUDIO OÜ | 17357172 |
| ARHIKON OÜ kustutatud | 11169417 |
| FREIMON OÜ kustutatud | 10679027 |
| PARIMON OÜ | 14804937 |
| ANTIMON OÜ | 16082282 |
| ARNISON OÜ (former name Roden Partners OÜ) | 12973972 |
| ARIKSON OÜ | 16666793 |
| ARMICON OÜ | 16120924 |
| ARNIMEN OÜ | 10949461 |
| TRIIMON OÜ | 11477314 |
| ALKOMON OÜ | 11173270 |
| ARSILON OÜ | 12933458 |
| ARTION OÜ kustutatud | 14817650 |
| PRIMON OÜ | 14201831 |
| ARIGON OÜ kustutatud | 10623736 |
| ARISON OÜ | 14534828 |
| ARISON OÜ kustutatud | 12351963 |
| ARIMOO OÜ | 16989600 |
| ARTIMO OÜ | 12865722 |
| ARTICON INVEST OÜ | 12329649 |
| ARTEMON FILM OÜ (former name CHIONE OÜ) | 14593854 |
| ARTEMON KV OÜ | 16315875 |
| ARTEMON TRADING OÜ | 10892465 |
| ARION OÜ | 11908858 |
| FRIMON INVEST OÜ kustutatud | 12989878 |
| ARIKON SERVICES OÜ kustutatud | 11977241 |
| ARIKON TEENUS OÜ kustutatud (former name Arikon Teenus UÜ) | 16076778 |
| ARITON RV OÜ | 11357478 |
| ARISON MARKETING OÜ | 16622502 |
| ARMION BUILD OÜ | 17482641 |
| ARITON PARTNERS OÜ | 17077076 |
| ARTIMO CAPITAL OÜ | 16562259 |
| ARTIMO REKLAAM OÜ | 14460297 |
| AKION EUROPE OÜ | 17328064 |
| ARMON ESTRADE OÜ kustutatud (former name Artwork Design Group OÜ) | 12239597 |
| ARION NORDIC OÜ kustutatud | 11211823 |
| ARIMO FINANCE OÜ | 12799474 |