- Prefix
- 00:12:A9 00-12-A9 0012.A9
- Block type
- MA-L (16,777,216 addresses)
- Address range
- 00:12:A9:00:00:00 – 00:12:A9:FF:FF:FF
- Organization
- 3Com Ltd
- Registered address
- Peoplebuilding 2, Hemel Hempstead Herts HP2 4NW, GB
- Country
- United Kingdom (GB)
- Address bits
- Unicast (I/G bit 0), globally unique (U/L bit 0)
Look up 00:12:A9:00:00:00
3COM holds 31 blocks in total: see all. Source: IEEE Registration Authority public listing.