3Com Ltd MAC address blocks
The IEEE registry carries 11 blocks registered to 3Com Ltd, together 185 million addresses, first observed 5 Jun 2002, most recently 29 May 2007.
Registered in GB.
Its portfolio also includes blocks acquired from 3Com Europe Ltd × 9 · 3COM EUROPE × 2.
Cumulative address space by first-observed date on a linear scale sized to this chart; hover for date and total.
| Prefix |
Block |
Addresses |
Country |
First registered |
| 00:0A:04 | MA-L | 16.8 million | GB | 5 Jun 2002 |
| 00:0B:AC | MA-L | 16.8 million | GB | 19 Nov 2002 |
| 00:0D:54 | MA-L | 16.8 million | GB | 1 Jun 2003 |
| 00:0E:6A | MA-L | 16.8 million | GB | 21 Dec 2003 |
| 00:0F:CB | MA-L | 16.8 million | GB | 17 Mar 2004 |
| 00:12:A9 | MA-L | 16.8 million | GB | 21 Oct 2004 |
| 00:14:7C | MA-L | 16.8 million | GB | 7 May 2005 |
| 00:16:E0 | MA-L | 16.8 million | GB | 23 Dec 2005 |
| 00:18:6E | MA-L | 16.8 million | GB | 13 Jun 2006 |
| 00:1A:C1 | MA-L | 16.8 million | GB | 12 Dec 2006 |
| 00:1C:C5 | MA-L | 16.8 million | GB | 29 May 2007 |
Every block registered to 3Com Ltd 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.