| Company name | Reg. code |
|---|---|
| FIRAST OÜ | 11242580 |
| FIRAS OÜ | 14774981 |
| FIRST OÜ kustutatud | 14896951 |
| FIREST-CONSULT OÜ | 11421986 |
| FIRST BALTIC OÜ kustutatud | 12670036 |
| FIRST PRINCIPLE OÜ kustutatud | 14432826 |
| FIRST ALTEA OÜ kustutatud | 12025407 |
| BALTIC FIRST OÜ | 17183766 |
| FIRST PROJECT OÜ | 10944268 |
| FIRST EASYTEC OÜ | 14093784 |
| FIRST RENT OÜ kustutatud | 12251492 |
| FUN FIRST OÜ | 12973883 |
| FIRST BANCORP OÜ kustutatud | 14476373 |
| PROFIT FIRST OÜ | 16945524 |
| DATA FIRST OÜ | 16491141 |
| FIRST CONSTRUCTION OÜ (former name Realizaria OÜ) | 12879262 |
| FIRST GROUP OÜ kustutatud | 12785791 |
| FIRST RING OÜ | 16138485 |
| NEPTUNE FIRST OÜ | 16183793 |
| CLIENT FIRST OÜ (former name OÜ MC Erks) | 16746996 |
| FIRST PHARMA OÜ | 11941125 |
| FIRST UNIT OÜ kustutatud | 14855739 |
| FIRST PROMO OÜ | 12098961 |
| FIRST OPPORTUNITY OÜ kustutatud | 12281107 |
| FIRST NUMBER OÜ kustutatud | 11506085 |
| FIRST ACCOUNTING OÜ (former name Aliquanto OÜ) | 12810477 |
| FIRST4U OÜ | 17391772 |
| BABYS FIRST OÜ | 16593031 |
| FIRST GUILD OÜ (former name THEGUILD OÜ) | 14913448 |
| TECHNOLOGY FIRST OÜ | 17431371 |
| FIRST EHITUS OÜ kustutatud | 11126493 |
| FIRST DIGITAL OÜ kustutatud (former name Blockchain Project OÜ) | 14433915 |
| FIRST LIGHT OÜ kustutatud | 12008805 |
| KIDS FIRST OÜ kustutatud | 11624324 |
| FIRST AID OÜ kustutatud | 12771240 |
| EXPERIENCE FIRST OÜ kustutatud | 16655281 |
| SAFETY FIRST OÜ | 12759210 |
| FIRST HOUSE OÜ kustutatud | 12566818 |
| FIRST TRADE OÜ | 12550007 |
| FIRST HOLDING OÜ kustutatud | 16049190 |
| FIRST RESOURCES OÜ kustutatud | 12017201 |
| FIRST CAPITAL OÜ | 12199165 |
| FIRST GUARANTEE OÜ kustutatud | 12478907 |
| FIRST BUILDING OÜ kustutatud | 12332049 |
| DENTAL FIRST OÜ | 16999276 |
| FIRST QUANTUM OÜ (former name Gazettiir OÜ) | 16205431 |
| CONSULT FIRST OÜ | 14948338 |
| FIRST HERITAGE OÜ | 14611492 |
| FIRST BUILDER OÜ | 12184330 |
| FIRST COMPANY OÜ kustutatud | 12341108 |