| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:03:46 | MA-L | 16.8 million | 15 Jan 2025 | KOKUSAI DENKI Electric Inc. |
| 00:40:31 | MA-L | 16.8 million | 15 Jan 2025 | KOKUSAI DENKI Electric Inc. |
Former Hitachi Kokusai MAC address blocks
The IEEE registry once carried 2 blocks registered to Hitachi Kokusai. All 2 blocks are now registered to KOKUSAI DENKI Electric Inc.. KOKUSAI DENKI Electric Inc. 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.