| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 38:BE:AB | MA-L | 16.8 million | 17 Sep 2021 | AltoBeam Inc. |
| 44:29:1E | MA-L | 16.8 million | 26 Jan 2022 | AltoBeam Inc. |
| 84:7A:B6 | MA-L | 16.8 million | 20 Dec 2020 | AltoBeam Inc. |
| 88:28:7D | MA-L | 16.8 million | 11 Jun 2022 | AltoBeam Inc. |
| 9C:1C:37 | MA-L | 16.8 million | 11 Feb 2021 | AltoBeam Inc. |
| A4:EF:15 | MA-L | 16.8 million | 22 Sep 2021 | AltoBeam Inc. |
| B4:FB:E3 | MA-L | 16.8 million | 26 Jul 2020 | AltoBeam Inc. |
| F4:B1:9C | MA-L | 16.8 million | 4 Jun 2021 | AltoBeam Inc. |
Former AltoBeam (China) Inc. MAC address blocks
The IEEE registry once carried 8 blocks registered to AltoBeam (China) Inc.. All 8 blocks are now registered to AltoBeam Inc.. AltoBeam 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.