| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 34:40:B5 | MA-L | 16.8 million | US | 1 Oct 2011 |
| 40:F2:E9 | MA-L | 16.8 million | US | 14 Aug 2012 |
| 98:BE:94 | MA-L | 16.8 million | US | 11 Feb 2014 |
| A8:97:DC | MA-L | 16.8 million | US | 30 Apr 2013 |
| 2C:69:1D:8 | MA-M | 1 million | US | 20 May 2022 |
| 90:4E:91:7 | MA-M | 1 million | US | 4 Jun 2017 |
| C4:FF:84:8 | MA-M | 1 million | CA | 26 Jul 2024 |
Every block registered to IBM in the IEEE registries, complete. Free-text search also matches former owners.