| Company name | Reg. code |
|---|---|
| EKLON OÜ | 14886504 |
| EYLON OÜ | 17466292 |
| EKSON OÜ kustutatud | 12253568 |
| EKMON OÜ kustutatud (former name SuJeFa OÜ) | 16336239 |
| EKRON OÜ kustutatud | 14297446 |
| KELON OÜ | 10075269 |
| ELON OÜ | 16101714 |
| EKNON TECH OÜ | 14373354 |
| ELKON GRUPP OÜ kustutatud | 10692097 |
| ELKON ELEKTER OÜ | 10496404 |
| ELON T17 OÜ (former name OÜ PT2) | 16523444 |
| EXCTH OÜ (former name ELON CTH OÜ) | 16176132 |
| EXCH1 OÜ (former name ELON CH OÜ) | 16978386 |
| EXSPV1 OÜ (former name ELON SPV1 OÜ) | 17196579 |
| TARTU MNT 54 OÜ (former name ELON T54 OÜ) | 16714948 |
| NARVA MNT 174 OÜ (former name ELON N174 OÜ) | 16121326 |
| ASTANGU 16 OÜ (former name ELON A16 OÜ) | 16262713 |