| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:21:BE | MA-L | 16.8 million | 18 Jun 2008 | Cisco SPVTG |
| 00:22:CE | MA-L | 16.8 million | 23 Jun 2009 | Cisco SPVTG |
Former Cisco, Service Provider Video Technology Group MAC address blocks
The IEEE registry once carried 2 blocks registered to Cisco, Service Provider Video Technology Group. All 2 blocks are now registered to Cisco SPVTG. Cisco SPVTG 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.