| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:01:47 | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:02:71 | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:18:0C | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:30:52 | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:50:CA | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:A0:1B | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 00:E0:DF | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 30:4F:75 | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 40:F2:1C | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| 9C:65:EE | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
| D0:96:FB | MA-L | 16.8 million | 16 Dec 2022 | Zhone Technologies, Inc. |
Former DZS California Inc. MAC address blocks
The IEEE registry once carried 11 blocks registered to DZS California Inc.. All 11 blocks are now registered to Zhone Technologies, Inc.. Zhone Technologies, 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.