Microsoft

Microsoft holds 9 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 Microsoft draw from a pool of about 150,994,944 possible MAC addresses in total.

Registered address: 1 Microsoft Way Redmond Washington US 98052

All 9 prefixes

• 30:59:B730:59:B7:00:00:00 – 30:59:B7:FF:FF:FF
• 4C:0B:BE4C:0B:BE:00:00:00 – 4C:0B:BE:FF:FF:FF
• 50:1A:C550:1A:C5:00:00:00 – 50:1A:C5:FF:FF:FF
• 58:82:A858:82:A8:00:00:00 – 58:82:A8:FF:FF:FF
• 60:45:BD60:45:BD:00:00:00 – 60:45:BD:FF:FF:FF
• 7C:1E:527C:1E:52:00:00:00 – 7C:1E:52:FF:FF:FF
• 7C:ED:8D7C:ED:8D:00:00:00 – 7C:ED:8D:FF:FF:FF
• B4:AE:2BB4:AE:2B:00:00:00 – B4:AE:2B:FF:FF:FF
• C0:33:5EC0:33:5E:00:00:00 – C0:33:5E: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.