| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:01:0F | MA-L | 16.8 million | 7 May 2005 | Brocade Communications Systems LLC |
| 08:00:88 | MA-L | 16.8 million | 22 Apr 1998 | Brocade Communications Systems LLC |
Former MCDATA CORPORATION MAC address blocks
The IEEE registry once carried 2 blocks registered to MCDATA CORPORATION. All 2 blocks are now registered to Brocade Communications Systems LLC. Brocade Communications Systems LLC took over all of them.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.