Madge Ltd.

Madge Ltd. holds 4 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 Madge Ltd. draw from a pool of about 67,108,864 possible MAC addresses in total.

Registered address: Madge House Maindenhead Berkshire GB SL6 2HP

All 4 prefixes

• 00:00:6F00:00:6F:00:00:00 – 00:00:6F:FF:FF:FF
• 00:00:C100:00:C1:00:00:00 – 00:00:C1:FF:FF:FF
• 00:02:8100:02:81:00:00:00 – 00:02:81:FF:FF:FF
• 00:80:E900:80:E9:00:00:00 – 00:80:E9: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.