IBM Corporation

IBM Corporation holds 2 OUI prefixes in the IEEE registry. Each prefix is the first three octets of a MAC address and covers a block of 16,777,216 addresses, so devices built by IBM Corporation draw from a pool of about 33,554,432 possible MAC addresses in total.

Registered address: 4400 North First Street San Jose CA US 95134

All 2 prefixes

• 6C:AE:8B6C:AE:8B:00:00:00 – 6C:AE:8B:FF:FF:FF
• 74:99:7574:99:75:00:00:00 – 74:99:75:FF:FF:FF

Have a full MAC address? Look it up to see which of these prefixes it belongs to — or browse the full manufacturer directory.