| Name | ITU-R | ITU-T | ITU-D | Categories |
| Ministry of Enterprise and Made in Italy, ROMA | | | | ADMIN |
| Autorità per le Garanzie nelle Comunicazioni (AGCOM), ROMA | | | | ADMIN RELATED / REGULATOR |
| Afinna One Srl, ROME | | ASSOCIATE SG2 | | ROA |
| Confindustria Radio Televisioni, Roma | ASSOCIATE SG6 | | | OTHER ENTITY |
| Deloitte Risk Advisory S.r.l., Milano | | | X | OTHER ENTITY |
| FastWeb S.p.A., MILANO NEXXT | | X | | ROA |
| Intermatica S.p.A., ROME | | X | | OTHER ENTITY |
| Prysmian SpA, MILANO | | X | | SIO |
| RAI - Radiotelevisione Italiana S.p.A., ROMA | X | | | ROA / OPERATOR |
| Rai Way S.p.A., ROMA | X | | | ROA |
| SM Optics s.r.l., MILAN | | ASSOCIATE SG15 | | SIO / MANUFACTURER |
| STMicroelectronics, AGRATE BRIANZA | | X | | SIO |
| Telecom Italia S.p.A., ROMA | X | X | | ROA |
| Telecom Italia Sparkle S.p.A., ROMA | | ASSOCIATE SG2 | | ROA |
| Telespazio S.p.A., ROMA | X | | | ROA |
