| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 38:72:C0 | MA-L | 16.8 million | 18 Nov 2010 | Comtrend Corporation |
| 64:68:0C | MA-L | 16.8 million | 27 Aug 2009 | Comtrend Corporation |
Former COMTREND MAC address blocks
The IEEE registry once carried 2 blocks registered to COMTREND. All 2 blocks are now registered to Comtrend Corporation. Comtrend Corporation 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.