| Company name | Reg. code |
|---|---|
| SERLCON OÜ | 17133716 |
| SERDMON OÜ | 11486939 |
| SERLONG OÜ | 14399187 |
| ŠERIDON OÜ kustutatud | 10419906 |
| SERATON OÜ | 14754339 |
| SERYSON OÜ | 16811611 |
| SERCOM OÜ | 16359482 |
| SERION OÜ | 16750766 |
| SERETON EHITUS OÜ | 16134553 |
| SEROCO NORD OÜ | 12705993 |
| SERLIN KV OÜ kustutatud | 12339028 |
| "SERICO TE" OÜ | 10126736 |
| SERGON KAUBANDUS OÜ | 10481383 |
| SEROCO ESTONIA OÜ | 12862907 |
| SEILCON OÜ | 17309658 |
| AEROCON OÜ | 14100878 |
| DEALCON OÜ | 12142969 |
| NERLION OÜ | 14276194 |
| TERLION OÜ | 14438852 |
| SEALION OÜ | 16634557 |
| KEROLCON OÜ | 12453907 |
| SEELION OÜ | 11004320 |
| REALCON OÜ (former name BSAB INVESTMENT OÜ) | 14389361 |
| ERLICON OÜ | 12173355 |
| SEVECON OÜ | 12929712 |
| SEMICON OÜ | 12895172 |
| PERICON OÜ | 12371181 |
| HELCON OÜ | 10008578 |
| MELCON OÜ | 14219727 |
| LERCON OÜ kustutatud | 12687918 |
| SELTON OÜ kustutatud | 12999061 |
| FERCON OÜ | 14589775 |
| GERLON OÜ | 12416993 |
| ERLTON OÜ kustutatud | 16525934 |
| SALCON OÜ | 14286750 |
| ERPCON OÜ | 16322823 |
| AERLON OÜ | 17321794 |
| SERON OÜ | 16814354 |
| MERLION STRATEGIES OÜ (former name Wolfpack Management OÜ) | 14988601 |
| STEELCON-SERVICE OÜ | 12357730 |
| STERLON SERVICES OÜ (former name Medpru OÜ) | 16332514 |
| TERICON GAMES OÜ | 17454449 |
| MERLION GRUPP OÜ | 16706564 |
| SERTON CONSULTING OÜ | 10240685 |
| MERLON TRANS OÜ (former name Merlon Trans UÜ) | 16653773 |
| SELCOM MEDIA OÜ kustutatud | 12085510 |
| HERCON CONSULTING OÜ kustutatud (former name Norexo OÜ) | 12929534 |
| SELDON HOLDING OÜ | 12811850 |
| MERLON EHITUS OÜ | 12946290 |
| SALCON HALDUS OÜ | 11982940 |