| Company name | Reg. code |
|---|---|
| INSER OÜ (former name InserVolt OÜ) | 12731996 |
| INSER VOLT OÜ | 17353530 |
| INSER INFRA OÜ | 16735943 |
| INSER SERVICE OÜ | 14948300 |
| PRII ELEKTER OÜ (former name PR Inser Invest OÜ) | 14165153 |
| INSERO OÜ | 12310289 |
| INSERV AP OÜ | 10588833 |
| INSERV GRUPP OÜ kustutatud | 11465736 |
| INSTER OÜ kustutatud | 11461827 |
| INSEC OÜ | 16855442 |
| INSAR OÜ | 14882765 |
| INSLER OÜ | 16357721 |
| INSEN OÜ | 12052019 |
| INSEL WOODHOUSE OÜ | 16443030 |
| INSEL MILL OÜ (former name OÜ Insel Woodhouse) | 11894147 |
| INSUR INSURANCE OÜ kustutatud | 14558697 |
| INSEK GRUPP OÜ | 16146378 |
| TETAROM CLUJ OÜ kustutatud (former name Insert Coin OÜ) | 14705879 |
| PEOMEISTER OÜ (former name Inset OÜ) | 16126393 |
| INSERAK OÜ kustutatud | 16212402 |
| INSERAN OÜ | 11700108 |
| INSERENX OÜ | 16153384 |
| INSERION OÜ | 16332000 |
| INSERPRO OÜ | 12792986 |
| F&O INSERVICE OÜ | 17378234 |
| INSERTA GRUPP OÜ | 10559168 |
| INSERGEETIKA OÜ | 14181494 |
| INSERVICE AUTO OÜ | 12839205 |
| ANSER OÜ | 12505587 |
| VINSER OÜ | 11724132 |
| INKER OÜ kustutatud | 16523547 |
| INNER OÜ kustutatud | 12468820 |
| INTER OÜ | 12335487 |
| INGER OÜ | 14415319 |
| INWER OÜ | 16335145 |
| INFER OÜ kustutatud | 10616794 |
| INNER TIME OÜ | 16551736 |
| INNER WORKINGS OÜ kustutatud | 14037751 |
| INGA INTER OÜ | 12733541 |
| INGER CONCEPTS OÜ | 16950040 |
| RAVIK INTER OÜ | 14060081 |
| INTER BAZEL OÜ | 14029740 |
| INTER GAS OÜ kustutatud | 10905096 |
| INNER KORA OÜ | 17468552 |
| FINER INTER OÜ | 16740459 |
| ESTROSS INTER OÜ | 11550927 |
| INTER VELOKS OÜ | 14904934 |
| WALYS INTER OÜ kustutatud (former name Wesfield Group OÜ) | 14235178 |
| INTER FUTURE OÜ kustutatud | 16744889 |
| INNER CONSULTING OÜ | 14295814 |