IBM Corp

IBM Corp holds 22 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 Corp draw from a pool of about 369,098,752 possible MAC addresses in total.

Registered address: 2051 Mission College Blvd Santa Clara CA US 95054

All 22 prefixes

• 00:02:5500:02:55:00:00:00 – 00:02:55:FF:FF:FF
• 00:04:AC00:04:AC:00:00:00 – 00:04:AC:FF:FF:FF
• 00:06:2900:06:29:00:00:00 – 00:06:29:FF:FF:FF
• 00:09:6B00:09:6B:00:00:00 – 00:09:6B:FF:FF:FF
• 00:0D:6000:0D:60:00:00:00 – 00:0D:60:FF:FF:FF
• 00:11:2500:11:25:00:00:00 – 00:11:25:FF:FF:FF
• 00:14:5E00:14:5E:00:00:00 – 00:14:5E:FF:FF:FF
• 00:17:EF00:17:EF:00:00:00 – 00:17:EF:FF:FF:FF
• 00:18:B100:18:B1:00:00:00 – 00:18:B1:FF:FF:FF
• 00:1A:6400:1A:64:00:00:00 – 00:1A:64:FF:FF:FF
• 00:20:3500:20:35:00:00:00 – 00:20:35:FF:FF:FF
• 00:21:5E00:21:5E:00:00:00 – 00:21:5E:FF:FF:FF
• 00:22:0000:22:00:00:00:00 – 00:22:00:FF:FF:FF
• 00:25:0300:25:03:00:00:00 – 00:25:03:FF:FF:FF
• 00:50:7600:50:76:00:00:00 – 00:50:76:FF:FF:FF
• 00:60:9400:60:94:00:00:00 – 00:60:94:FF:FF:FF
• 08:00:5A08:00:5A:00:00:00 – 08:00:5A:FF:FF:FF
• 08:17:F408:17:F4:00:00:00 – 08:17:F4:FF:FF:FF
• 10:00:5A10:00:5A:00:00:00 – 10:00:5A:FF:FF:FF
• 5C:F3:FC5C:F3:FC:00:00:00 – 5C:F3:FC:FF:FF:FF
• E4:1F:13E4:1F:13:00:00:00 – E4:1F:13:FF:FF:FF
• FC:CF:62FC:CF:62:00:00:00 – FC:CF:62: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.