The IEEE registry carries 2 blocks registered to Southwest Research Institute, together 16.8 million addresses, first observed 22 Nov 2009, most recently 10 Oct 2012.
Registered in US.
| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| D0:46:DC | MA-L | 16.8 million | US | 10 Oct 2012 |
| 00:50:C2:B9:8 | IAB | 4.1 thousand | US | 22 Nov 2009 |
Every block registered to Southwest Research Institute in the IEEE registries, complete. Free-text search also matches former owners.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.