| Name | ITU-R | ITU-T | ITU-D | Categories |
| The Chancellery of the Prime Minister, Warszawa | ADMIN | |||
| Office of Electronic Communications, WARSAW | ADMIN RELATED / REGULATOR | |||
| Orange Polska S.A., WARSAW | X | X | ROA | |
| Polkomtel Sp. z o.o., WARSAW | X | X | ROA |
Academia
| Name | Category |
| Lodz University of Technology, LODZ | UNIVERS,RSRCH |