| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:12:93 | MA-L | 16.8 million | 10 Oct 2004 | ABB Switzerland Ltd |
| 00:1D:51 | MA-L | 16.8 million | 18 Aug 2007 | Babcock & Wilcox Power Generation Group, Inc |
Former GE Energy MAC address blocks
The IEEE registry once carried 2 blocks registered to GE Energy. They are now registered across 2 organizations: ABB Switzerland Ltd. × 1, Babcock & Wilcox Power Generation Group, Inc × 1.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.