3COM

3COM holds 20 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 3COM draw from a pool of about 335,544,320 possible MAC addresses in total.

Registered address: 2133 LEGHORN STREET MOUNTAIN VIEW CA US 94043

All 20 prefixes

• 00:01:0200:01:02:00:00:00 – 00:01:02:FF:FF:FF
• 00:01:0300:01:03:00:00:00 – 00:01:03:FF:FF:FF
• 00:02:9C00:02:9C:00:00:00 – 00:02:9C:FF:FF:FF
• 00:04:7500:04:75:00:00:00 – 00:04:75:FF:FF:FF
• 00:04:7600:04:76:00:00:00 – 00:04:76:FF:FF:FF
• 00:06:8C00:06:8C:00:00:00 – 00:06:8C:FF:FF:FF
• 00:0A:5E00:0A:5E:00:00:00 – 00:0A:5E:FF:FF:FF
• 00:10:4B00:10:4B:00:00:00 – 00:10:4B:FF:FF:FF
• 00:10:5A00:10:5A:00:00:00 – 00:10:5A:FF:FF:FF
• 00:20:AF00:20:AF:00:00:00 – 00:20:AF:FF:FF:FF
• 00:26:5400:26:54:00:00:00 – 00:26:54:FF:FF:FF
• 00:50:0400:50:04:00:00:00 – 00:50:04:FF:FF:FF
• 00:50:DA00:50:DA:00:00:00 – 00:50:DA:FF:FF:FF
• 00:60:0800:60:08:00:00:00 – 00:60:08:FF:FF:FF
• 00:60:8C00:60:8C:00:00:00 – 00:60:8C:FF:FF:FF
• 00:60:9700:60:97:00:00:00 – 00:60:97:FF:FF:FF
• 00:A0:2400:A0:24:00:00:00 – 00:A0:24:FF:FF:FF
• 00:D0:D800:D0:D8:00:00:00 – 00:D0:D8:FF:FF:FF
• 02:60:8C02:60:8C:00:00:00 – 02:60:8C:FF:FF:FF
• 02:C0:8C02:C0:8C:00:00:00 – 02:C0:8C: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.