EFM Networks

EFM Networks holds 8 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 EFM Networks draw from a pool of about 134,217,728 possible MAC addresses in total.

Registered address: 403, 4th floor Elegance 1 Bldg. Sungnam-si Kyunggi-do KR 463-808

All 8 prefixes

• 00:08:9F00:08:9F:00:00:00 – 00:08:9F:FF:FF:FF
• 00:26:6600:26:66:00:00:00 – 00:26:66:FF:FF:FF
• 58:86:9458:86:94:00:00:00 – 58:86:94:FF:FF:FF
• 64:E5:9964:E5:99:00:00:00 – 64:E5:99:FF:FF:FF
• 70:5D:CC70:5D:CC:00:00:00 – 70:5D:CC:FF:FF:FF
• 88:36:6C88:36:6C:00:00:00 – 88:36:6C:FF:FF:FF
• 90:9F:3390:9F:33:00:00:00 – 90:9F:33:FF:FF:FF
• B0:38:6CB0:38:6C:00:00:00 – B0:38:6C: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.