| Company name | Reg. code |
|---|---|
| NULTER OÜ | 16306965 |
| NULZEN GROUP OÜ | 17344324 |
| HUNTER OÜ | 16639052 |
| AUKTER OÜ | 14613835 |
| BULLER OÜ | 14718273 |
| DUSTER OÜ | 12204676 |
| GÜNTER OÜ | 10238903 |
| CULTUR OÜ | 17113576 |
| BUTLER OÜ kustutatud | 12043842 |
| KULLER OÜ | 14835990 |
| BOLTER OÜ | 14781768 |
| HOLTER OÜ | 12900447 |
| KULGER OÜ (former name KULGER 2 OÜ) | 12871295 |
| FULLER OÜ (former name Javier Cuello OÜ) | 16123972 |
| AUSTER OÜ | 17450859 |
| FALTER OÜ | 14291573 |
| ALUTER OÜ | 16965082 |
| FUSTER OÜ kustutatud | 14888868 |
| FULDER OÜ | 10803473 |
| KILTER OÜ | 11302253 |
| OU KULLER OÜ | 16646810 |
| AUSTER CAPITAL OÜ kustutatud | 12241789 |
| MULGI KULLER OÜ | 17304253 |
| FOOD FILTER OÜ | 16667054 |
| OFF-KILTER OÜ kustutatud | 16159553 |
| FILTER HOLDING OÜ kustutatud | 16100459 |
| HUNTER2HUNT OÜ | 17112341 |
| FILTER24.EE OÜ kustutatud | 11862294 |
| GUTTER ARENDUS OÜ kustutatud | 11160333 |
| BELTER INVESTMENT OÜ kustutatud | 14243232 |
| BALTIC HUNTER OÜ | 11288122 |
| FISH HUNTER OÜ | 16222857 |
| FILTER PLUS OÜ (former name Dagoterm OÜ) | 14610854 |
| FILTER EUROPE OÜ (former name Filter Waste OÜ) | 12615706 |
| MARKET HUNTER OÜ | 16845484 |
| BULTEN INDUSTRIES OÜ kustutatud | 10538692 |
| FULNER CONSULT OÜ kustutatud | 12268535 |
| HUNTER-EST OÜ kustutatud | 10482477 |
| BUNTER ELEFANT OÜ kustutatud | 16177083 |
| BELTER TRADING OÜ kustutatud | 12712450 |
| PUHTUS KULLER OÜ | 16245637 |
| KALLE KILTER OÜ | 10035092 |
| KÄBI COULTER OÜ (former name KKK FACEART OÜ) | 14753051 |
| ROYAL HUNTER OÜ kustutatud | 12765831 |
| KULLER AIN OÜ | 16902644 |
| BULWER SOLUTIONS OÜ kustutatud | 14215454 |
| FILTER FORGE OÜ kustutatud (former name Matterlist OÜ) | 14321156 |
| V-KULLER OÜ | 14145251 |
| MM KULLER OÜ | 17045703 |
| VIA KULLER OÜ | 12728497 |