| Company name | Reg. code |
|---|---|
| SICURA OÜ | 16523013 |
| SICARU OÜ kustutatud | 16268851 |
| SICARE OÜ (former name Jahutus ja Küte OÜ) | 14099893 |
| SICMA21 OÜ | 16613644 |
| SILERA OÜ | 17417783 |
| NICORA OÜ | 16721799 |
| SIGURI OÜ | 16274254 |
| SIMORA OÜ | 16135096 |
| SECURY OÜ kustutatud | 14337157 |
| SIGORA OÜ (former name Nutilamp OÜ) | 14832218 |
| 4SECURE OÜ (former name Revenio OÜ) | 12086722 |
| ISSURA OÜ | 16381106 |
| MISURA OÜ | 17461797 |
| SIGURD OÜ | 14085098 |
| KIMURA OÜ | 16537506 |
| SIGURD OÜ kustutatud | 10634295 |
| SAKURA OÜ | 11537950 |
| SILARA OÜ (former name Vedahealth OÜ) | 17032642 |
| SEKURA OÜ kustutatud | 14382471 |
| SIERRA OÜ | 17380194 |
| SIDUVA OÜ | 17446705 |
| DOCURA OÜ (former name Welltek Estonia OÜ) | 12771211 |
| SILBRA OÜ | 14108310 |
| SIDURI 6 OÜ | 14073356 |
| SIGURNA OÜ | 14623161 |
| SIIDRA OÜ kustutatud | 16213399 |
| FIXURA OÜ kustutatud | 12763855 |
| SIBURO OÜ | 16329340 |
| OSCURA OÜ | 11050685 |
| MARTIN PITURA OÜ kustutatud | 14560375 |
| CHARLIE SIERRA OÜ | 14564723 |
| RISK SECURE OÜ (former name Risk Secure Insurance Broker OÜ) | 16205419 |
| SIMURAN SV OÜ | 16933219 |
| UK SECURE OÜ | 16026711 |
| SIERRA KILO OÜ | 17303868 |
| ACCURA TECHNOLABS OÜ | 16492146 |
| SECURE INVEST OÜ kustutatud | 10469703 |
| SIERRA MARITIME OÜ kustutatud | 10791994 |
| SALURA TALU OÜ | 10182628 |
| SECURE ENERGY OÜ | 12777337 |
| FIGURA TUZ OÜ | 17432726 |
| VESKI-SIBULA OÜ kustutatud | 10255117 |
| SIMERA TRADE OÜ kustutatud | 16317934 |
| TERRA SECURE OÜ | 17235472 |
| ANDRÉS SEGURA OÜ kustutatud | 16338008 |
| SAKURA SERVICE OÜ | 12975534 |
| SECERA BALTICS OÜ | 16076198 |
| FIGURA FIT OÜ | 14463614 |
| SIMUNA KARTUL OÜ | 17238160 |
| JUSCA HICORA OÜ (former name CarBuy OÜ) | 14934507 |