| Telecom Italia S.p.A. | 34.620 | 1 | 6.513 |
| Wind Tre S.p.A. | 3.461 | 17 | 914 |
| Vodafone Italia S.p.A. | 2.646 | 16 | 78 |
| Retelit-X S.r.l. | 1.458 | 0 | 695 |
| FastWeb S.p.A. | 1.658 | 6 | 240 |
| Wind Tre | 0 | 0 | 1.758 |
| Tiscali Italia S.p.A. | 1.035 | 0 | 332 |
| Telecom Italia | 0 | 0 | 1.116 |
| WIND TRE | 0 | 0 | 1.032 |
| Colt Technology Services S.p.A. | 354 | 0 | 388 |
| Retelit Digital Services S.p.A. (ex Irideos/Clouditalia) | 722 | 0 | 0 |
| Retelit Digital Services S.p.A. (ex Irideos) | 0 | 1 | 661 |
| TeleTu S.p.A. | 505 | 0 | 138 |
| Webcom TLC s.r.l. | 128 | 0 | 463 |
| Retelit Digital Services S.p.A. (ex Irideos/Infracom) | 490 | 0 | 0 |
| Vianova S.p.A. | 320 | 1 | 158 |
| Unidata S.p.A. (ex TWT) | 406 | 0 | 70 |
| Uno Communications S.p.A. | 296 | 0 | 79 |
| Messagenet S.p.A. | 313 | 0 | 59 |
| Tiscali | 0 | 0 | 360 |
| Orange Business Italy S.p.A. | 237 | 0 | 118 |
| Verizon Italia S.p.A. | 256 | 0 | 88 |
| Intermatica S.p.A. | 118 | 11 | 212 |
| Siportal S.r.l. | 231 | 0 | 106 |
| Retelit-X | 0 | 0 | 328 |
| Iliad Italia S.p.A. | 312 | 9 | 0 |
| Telecom Italia Sparkle | 0 | 1 | 312 |
| Dialoga servicios interactivos S.A. | 247 | 0 | 53 |
| Sky Italia S.r.l. | 282 | 0 | 0 |
| Voxbone SA | 241 | 0 | 31 |
| Planetel s.r.l. | 267 | 0 | 2 |
| Unidata S.p.A. | 262 | 0 | 5 |
| Retelit Digital Services S.p.A. (ex Irideos/Mc Link) | 248 | 0 | 0 |
| NewVAS S.p.A. | 235 | 0 | 11 |
| Retelit Digital Services S.p.A. (ex BT Enia) | 0 | 0 | 241 |
| Convergenze S.p.A. | 233 | 0 | 4 |
| Vast New Telecom SA | 234 | 0 | 2 |
| Base Digitale Platform S.p.A. | 231 | 0 | 3 |
| Digitel Italia S.p.A. | 234 | 0 | 0 |
| Optima Italia S.p.A. | 232 | 0 | 1 |
| Eolo S.p.A. | 232 | 0 | 0 |
| Connecting Project Srl | 231 | 0 | 0 |
| Retelit Digital Services S.p.A. (ex Irideos/Enter) | 230 | 0 | 0 |
| EHINET S.r.l. | 174 | 0 | 51 |
| Acantho S.p.A. | 157 | 0 | 66 |
| Enegan S.p.A. | 223 | 0 | 0 |
| XStream s.r.l. | 200 | 0 | 3 |
| Ambrogio SRL | 176 | 0 | 0 |
| TWT | 0 | 0 | 172 |
| Active Network S.p.A. | 170 | 0 | 0 |
| Colt Telecom | 0 | 0 | 170 |
| Intred S.p.A. | 163 | 0 | 1 |
| Kaleyra | 0 | 0 | 147 |
| Retelit Digital Services (ex Irideos) | 0 | 0 | 137 |
| B4 S.r.l. | 13 | 0 | 121 |
| Commify Italia S.p.A. | 0 | 0 | 130 |
| Suntel S.r.l. | 0 | 0 | 128 |
| Bics S.A. | 116 | 0 | 5 |
| FlyNet | 0 | 0 | 110 |
| Retelit Digital Services S.p.A. (ex Brennercom) | 85 | 0 | 17 |
| Sinergie S.R.L. | 89 | 0 | 13 |
| Consortium GARR | 0 | 0 | 100 |
| Parla.it | 0 | 0 | 100 |
| WIND | 0 | 0 | 100 |
| Mewecom Italia S.p.A. | 78 | 0 | 18 |
| King.com S.p.A. | 86 | 0 | 2 |
| Fastweb | 0 | 0 | 81 |
| Teslatel | 7 | 0 | 68 |
| Mynet s.r.l. | 71 | 0 | 2 |
| Intermatica | 0 | 0 | 72 |
| Italiacomm S.r.l. | 49 | 0 | 23 |
| Afinna One | 37 | 0 | 30 |
| Intred S.p.A. (ex Qcom S.p.A.) | 65 | 0 | 2 |
| Mediacare S.p.A. | 33 | 0 | 27 |
| Itelsi' S.r.l. | 58 | 0 | 0 |
| Alida s.r.l. | 56 | 0 | 1 |
| Aruba S.R.L. | 0 | 0 | 56 |
| TEANET Srl | 3 | 0 | 51 |
| Clio S.R.L. | 3 | 0 | 50 |
| 10993 | 0 | 0 | 51 |
| Aimon srl | 0 | 0 | 51 |
| Momax Network srl | 42 | 0 | 9 |
| Fly Cell Media S.p.A. | 0 | 0 | 50 |
| IPX Italia SrL | 0 | 0 | 50 |
| Infotech S.r.l. | 0 | 0 | 50 |
| Intratec | 0 | 0 | 50 |
| LT Telecom S.p.A. | 0 | 0 | 50 |
| MIX S.R.L. | 0 | 0 | 50 |
| Maxfon Campania s.r.l. | 0 | 0 | 50 |
| Movytel S.p.A. | 0 | 0 | 50 |
| PLURALIA s.c.a.r.l. | 0 | 0 | 50 |
| Reteitaly S.r.l. | 0 | 0 | 50 |
| T.Net Italia S.R.L. | 0 | 0 | 50 |
| T.Net S.p.A. | 0 | 0 | 50 |
| Teleinform S.p.A. | 0 | 0 | 50 |
| Televoip Italia S.R.L. | 0 | 0 | 50 |
| Telnet S.r.l. | 0 | 0 | 50 |
| Telvia S.R.L. | 0 | 0 | 50 |
| Teseo Networking | 0 | 0 | 50 |
| United Com S.R.L. | 0 | 0 | 50 |
| Utility Line Italia S.r.l. | 0 | 0 | 50 |
| Viatek srl | 0 | 0 | 50 |
| Sirius Technology SRL | 47 | 0 | 0 |
| A2A Smart City S.p.A. (ex Lineacom) | 42 | 0 | 3 |
| Axera S.p.A. (ex Interplanet S.r.l.) | 42 | 0 | 1 |
| SAP Italia S.p.A. | 0 | 0 | 43 |
| Netoip.com | 40 | 0 | 2 |
| Link Mobility | 0 | 0 | 41 |
| TAG Comunicazioni S.p.A. | 36 | 0 | 4 |
| ST srl | 39 | 0 | 0 |
| Estracom S.p.A. (Consiagnet) | 34 | 0 | 4 |
| Dimensione s.r.l. | 37 | 0 | 0 |
| Fiberwide S.p.A. | 35 | 0 | 1 |
| Telmekom GMBH s.r.l. | 32 | 0 | 3 |
| Teslatel.Net | 5 | 0 | 29 |
| B.B.Bell | 30 | 0 | 1 |
| Altitud s.r.l. | 29 | 0 | 1 |
| Professional Link S.r.l. (PLINK) | 29 | 0 | 1 |
| AdaptoIP | 29 | 0 | 0 |
| I.NET2 S.r.l. | 0 | 0 | 26 |
| Intercom S.r.l. | 0 | 0 | 25 |
| Telecom Italia S.p.A. - TIM | 0 | 18 | 1 |
| Agile Telecom S.p.A. | 2 | 1 | 10 |
| Compatel Limited | 0 | 1 | 10 |
| R&D Communications S.r.l. | 0 | 1 | 10 |
| Link Mobility Italia S.r.l. | 3 | 1 | 3 |
| Poste Mobile (PostePay S.p.A.) | 0 | 7 | 0 |
| Lycamobile | 0 | 6 | 0 |
| ENEL Global Services Srl | 0 | 5 | 0 |
| Digi Italy S.r.l. | 2 | 2 | 0 |
| Nextus Telecom s.r.l. | 2 | 2 | 0 |
| Mexedia S.p.A. | 2 | 1 | 0 |
| Plintron Europe Limited | 0 | 3 | 0 |
| Sinch | 0 | 1 | 2 |
| VEI s.r.l. | 0 | 3 | 0 |
| COOP Italia s.c. | 0 | 2 | 0 |
| DireQ | 0 | 1 | 1 |
| Mitto Italia S.r.l. | 1 | 1 | 0 |
| Telespazio S.p.A. | 0 | 2 | 0 |
| A-Tono Srl | 0 | 1 | 0 |
| AMM S.p.A. | 0 | 1 | 0 |
| Digitel Mobile Srl | 0 | 1 | 0 |
| Kaleyra S.p.A. | 0 | 1 | 0 |
| Mundio S.r.l. | 0 | 1 | 0 |
| Rete Ferroviaria Italiana S.p.A. | 0 | 1 | 0 |
| Spusu Italia Srl | 0 | 1 | 0 |
| Terna S.p.A | 0 | 1 | 0 |