The IEEE registry carries 3 blocks registered to XIRCOM, together 50.3 million addresses, first observed 22 Apr 1998, most recently 2 Feb 2001.
Registered in US.
| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:05:3C | MA-L | 16.8 million | US | 2 Feb 2001 |
| 00:10:A4 | MA-L | 16.8 million | US | 22 Apr 1998 |
| 00:80:C7 | MA-L | 16.8 million | US | 14 Jun 2000 |
Every block registered to XIRCOM 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.