| 00:90:AE | ITALTEL SPA | ITALTEL S.p.A. | 5 Jun 2002 |
| 00:E0:6E | FAR SYSTEMS SPA | FAR SYSTEMS S.p.A. | 5 Jun 2002 |
| 00:E0:7F | LOGISTISTEM SRL | LOGISTISTEM s.r.l. | 5 Jun 2002 |
| 00:E0:C2 | NECSY SPA | NECSY S.p.A. | 5 Jun 2002 |
| 00:08:27 | Pirelli Cables & Systems | Pirelli Broadband Solutions | 1 Mar 2005 |
| 00:14:3A | RAYTALK | RAYTALK INTERNATIONAL SRL | 7 Apr 2005 |
| 00:D0:1A | URMET SUD S.P.A. | URMET TLC S.P.A. | 8 Apr 2006 |
| 00:15:3F | Alenia Spazio S.p.A. | Alcatel Alenia Space Italia | 20 Feb 2007 |
| 00:90:1E | SELESTA INGEGNE RIA S.P.A. | Selesta Ingegneria S.p.A. | 29 Sep 2007 |
| 00:08:77 | Liebert HIROSS S.p.A. | Liebert-Hiross Spa | 22 Oct 2007 |
| 00:08:0C | VDA elettronica SrL | VDA Elettronica spa | 31 Dec 2007 |
| 00:1C:D3 | ZP Engineering srl | ZP Engineering SEL | 9 Feb 2008 |
| 00:1B:E4 | RETEMATICA SNC | TOWNET SRL | 19 Jul 2008 |
| 00:21:F3 | M31 SpA | Si14 SpA | 23 Jun 2009 |
| 00:40:DE | ELETTRONICA SAN GIORGIO | Elsag Datamat spa | 1 Jul 2010 |
| 00:12:81 | CIEFFE srl | March Networks S.p.A. | 26 Jan 2011 |
| 7C:14:76 | AE Partners S.a.s | Damall Technologies S.A.S. Di Ludovic Anselme Glaglanon & C. | 16 Feb 2011 |
| 00:08:27 | Pirelli Broadband Solutions | ADB Broadband Italia | 14 Dec 2011 |
| 00:13:C8 | PIRELLI BROADBAND SOLUTIONS S.P.A. | ADB Broadband Italia | 14 Dec 2011 |
| 00:17:C2 | Pirelli Broadband Solutions | ADB Broadband Italia | 14 Dec 2011 |
| 00:19:3E | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 00:1C:A2 | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 00:1D:8B | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 00:22:33 | Pirelli Broadband Solutions | ADB Broadband Italia | 14 Dec 2011 |
| 00:23:8E | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 00:25:53 | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 30:39:F2 | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 38:22:9D | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 64:87:D7 | PIRELLI BROADBAND SOLUTIONS | ADB Broadband Italia | 14 Dec 2011 |
| 00:17:CE | MB International Telecom Labs srl | Screen Service Spa | 3 Apr 2012 |
| C8:8B:47 | Opticos s.r.l. | Nolangroup S.P.A con Socio Unico | 1 Aug 2012 |
| 20:91:D9 | I'M SPA | I'M SPA | 29 Nov 2012 |
| 04:E2:F8 | AEP srl | AEP Ticketing solutions srl | 30 Jan 2013 |
| 7C:14:76 | Damall Technologies S.A.S. Di Ludovic Anselme Glaglanon & C. | Damall Technologies SAS | 30 Jan 2013 |
| DC:0B:1A | ADB Broadband SpA | ADB Broadband Italia | 30 Jan 2013 |
| 04:E2:F8 | AEP Ticketing solutions srl | AEP srl | 31 Jan 2013 |
| 20:91:D9 | I'M SPA | I'M SPA | 31 Jan 2013 |
| 7C:14:76 | Damall Technologies SAS | Damall Technologies S.A.S. Di Ludovic Anselme Glaglanon & C. | 31 Jan 2013 |
| DC:0B:1A | ADB Broadband Italia | ADB Broadband SpA | 31 Jan 2013 |
| 00:16:37 | Citel Srl | CITEL SpA | 14 Feb 2013 |
| 04:E2:F8 | AEP srl | AEP Ticketing solutions srl | 14 Feb 2013 |
| 20:91:D9 | I'M SPA | I'M SPA | 14 Feb 2013 |
| 7C:14:76 | Damall Technologies S.A.S. Di Ludovic Anselme Glaglanon & C. | Damall Technologies SAS | 14 Feb 2013 |
| DC:0B:1A | ADB Broadband SpA | ADB Broadband Italia | 14 Feb 2013 |
| CC:00:80 | TRUST SYSTEM Co., | BETTINI SRL | 27 Mar 2013 |
| 00:23:8E | ADB Broadband Italia | Pirelli Tyre S.p.A. | 12 Apr 2013 |
| 00:25:53 | ADB Broadband Italia | Pirelli Tyre S.p.A. | 12 Apr 2013 |
| 38:22:9D | ADB Broadband Italia | Pirelli Tyre S.p.A. | 12 Apr 2013 |
| 64:87:D7 | ADB Broadband Italia | Pirelli Tyre S.p.A. | 12 Apr 2013 |
| 00:0E:E2 | Custom Engineering S.p.A. | Custom Engineering | 8 Apr 2014 |
| 90:51:3F | Elettronica Santerno | Elettronica Santerno SpA | 17 Dec 2014 |
| 00:23:8E | Pirelli Tyre S.p.A. | ADB Broadband Italia | 30 Oct 2015 |
| 00:25:53 | Pirelli Tyre S.p.A. | ADB Broadband Italia | 30 Oct 2015 |
| 00:A0:2F | PIRELLI CAVI | ADB Broadband Italia | 30 Oct 2015 |
| 38:22:9D | Pirelli Tyre S.p.A. | ADB Broadband Italia | 30 Oct 2015 |
| 64:87:D7 | Pirelli Tyre S.p.A. | ADB Broadband Italia | 30 Oct 2015 |
| 00:90:AE | ITALTEL S.p.A. | ITALTEL S.p.A/RF-UP-I | 3 Feb 2016 |
| A0:67:BE | Sicon s.r.l. | Sicon srl | 19 Feb 2016 |
| 30:C8:2A | Wi-Next s.r.l. | WI-BIZ srl | 26 Feb 2016 |
| 2C:9A:A4 | NGI SpA | Eolo SpA | 12 Oct 2016 |
| 00:0D:82 | PHS srl | PHSNET SRLS | 23 Feb 2018 |
| 00:0D:82 | PHSNET SRLS | PHSNET | 1 Nov 2018 |
| B8:8F:B4 | PIRELLI TYRE S.P.A | JABIL CIRCUIT ITALIA S.R.L | 28 Nov 2018 |
| 70:B3:D5:62:8 | MECT S.R.L. | MECT SRL | 10 Jan 2019 |
| 00:1E:E0 | Urmet Domus SpA | Urmet SpA | 16 Apr 2020 |
| 00:08:0C | VDA Elettronica spa | VDA Group S.p.a. | 9 Jan 2021 |
| 70:B3:D5:31:2 | Blue Sparq, Inc. | SMITEC S.p.A. | 29 Jan 2021 |
| B4:C8:10 | UMPI Elettronica | Umpi srl | 8 Apr 2021 |
| 4C:E2:F1 | sclak srl | Udino srl | 9 Jun 2021 |
| 70:B3:D5:6C:1 | Labtronik s.r.l. | R.A.I.T.88 Srl | 29 Sep 2021 |
| 00:A0:A2 | DIGICOM S.P.A. | B810 S.R.L. | 22 Dec 2021 |
| 78:D4:F1:1 | Cartender | Silla Industries | 5 Mar 2022 |
| 88:C9:B3:A | Gefran Drive & Motion srl | WEG AUTOMATION EUROPE S.R.L. | 2 Dec 2022 |
| 00:0E:51 | tecna elettronica srl | TECNA SpA | 3 Dec 2022 |
| B0:38:93 | Onda TLC GmbH | Onda TLC Italia S.r.l. | 23 Feb 2023 |
| 8C:1F:64:B2:F | Gamma Commerciale Srl a socio unico - Mtechnology | Mtechnology - Gamma Commerciale Srl | 11 Mar 2023 |
| 00:02:63 | UPS Manufacturing SRL | RPS S.p.A. | 23 Jun 2023 |
| 00:0E:72 | CTS electronics | Arca Technologies S.r.l. | 1 Jul 2023 |
| 70:B3:D5:06:0 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:15:9 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:23:3 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:29:4 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:6B:D | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:78:6 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:88:E | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:97:D | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:C0:9 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| 70:B3:D5:DA:9 | RCH Vietnam Limited Liability Company | RCH SPA | 4 Jul 2023 |
| A0:02:4A:1 | Vitec Imaging Solutions Spa | Videndum Media Solutions Spa | 8 Nov 2023 |
| 70:B3:D5:3F:7 | Advansid | CEFLA SC | 12 Dec 2023 |
| 00:1B:C5:09:C | S.I.C.E.S. srl | MECCALTE SPA | 1 Jun 2024 |
| 4C:91:7A:7 | S.I.C.E.S. srl | MECCALTE SPA | 1 Jun 2024 |
| 70:B3:D5:EA:7 | S.I.C.E.S. srl | MECCALTE SPA | 1 Jun 2024 |
| 90:4E:91:5 | mcf88 SRL | ENGINKO SRL | 5 Oct 2024 |
| E8:F9:28 | RFTECH SRL | ENGINKO SRL | 5 Oct 2024 |
| 00:0E:72 | Arca Technologies S.r.l. | Sesami Technologies Srl | 5 Sep 2025 |
| 20:B3:7F:0 | Chelsio Communications Inc | B810 SPA | 26 Mar 2026 |
| 30:49:50:A | Ledworks SRL | Illucere Srl | 17 Apr 2026 |
| DC:2D:DE | Ledworks SRL | Illucere Srl | 17 Apr 2026 |