| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:1D:20 | MA-L | 16.8 million | 18 Aug 2007 | Comtrend Corporation |
| 00:30:DA | MA-L | 16.8 million | 8 Sep 2000 | Comtrend Corporation |
Former COMTREND CO. MAC address blocks
The IEEE registry once carried 2 blocks registered to COMTREND CO.. 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.