| Ettevõtte nimi | Reg. kood |
|---|---|
| PROTOOLS OÜ | 12269569 |
| PROTOOLS MARKETING OÜ kustutatud (endine nimi Onsar OÜ) | 12882548 |
| DEX PROTOCOLS OÜ | 16483549 |
| PROFOODS OÜ | 14864299 |
| PROFOILS OÜ | 17261644 |
| PROTOSYS OÜ | 16662890 |
| PROFFTOOLS OÜ | 17003988 |
| PROROOL OÜ | 16335458 |
| PROTOLA OÜ | 16420052 |
| PROTONS OÜ | 14730423 |
| PROTOOM OÜ | 11449527 |
| PROPOOL OÜ | 17243221 |
| PROTOS OÜ | 12210599 |
| OMEGALABS PROTOCOL OÜ | 17418123 |
| DEBOND PROTOCOL OÜ kustutatud | 16445299 |
| BOON PROTOCOL OÜ kustutatud | 16714428 |
| PROTOKOL HOLDING OÜ kustutatud | 17003652 |
| NINTH PROTOCOL OÜ | 17366691 |
| NEBULA PROTOCOL OÜ | 14539607 |
| PROTOULIS ANALYTICS OÜ | 16318827 |
| CARTHAGE PROTOCOL OÜ | 17509618 |
| PRODUCT PROTOCOL OÜ | 14732830 |
| PROTOLA GROUP OÜ (endine nimi Toppet OÜ) | 14894840 |
| TALLINN PROTOON OÜ | 12515413 |
| LT PROPOOL OÜ | 17073782 |
| PROWOOL BALTIC OÜ | 11856342 |
| OK-PROTOS OÜ (endine nimi Amartox OÜ) | 12324386 |
| PROTOS SERVICE OÜ (endine nimi EarthQuake OÜ) | 12503189 |
| PROTOS VARA OÜ | 11460762 |
| CHAIN PROTOCOL LABS OÜ (endine nimi POLKAMARKET OÜ) | 16148064 |
| ATOMIC PROTOCOL SYSTEMS OÜ | 14519622 |
| THE WEALTH PROTOCOL OÜ | 16517053 |
| PROLIGHTS OÜ (endine nimi ProDoors OÜ) | 12258347 |
| EUROTOOLS DISTRIBUTORS OÜ | 16846354 |
| E-OFFICE OÜ (endine nimi Protfoods OÜ) | 12616663 |
| TEHNOKEEVITUS OÜ (endine nimi PMTools OÜ) | 14613479 |