ASRock Incorporation

ASRock Incorporation holds 7 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 ASRock Incorporation draw from a pool of about 117,440,512 possible MAC addresses in total.

Registered address: 2F., No. 37, Sec. 2, Jhongyang S. Rd., Beitou District, Taipei TW 112

All 7 prefixes

• 00:25:2200:25:22:00:00:00 – 00:25:22:FF:FF:FF
• 54:FB:6654:FB:66:00:00:00 – 54:FB:66:FF:FF:FF
• 70:85:C270:85:C2:00:00:00 – 70:85:C2:FF:FF:FF
• 9C:6B:009C:6B:00:00:00:00 – 9C:6B:00:FF:FF:FF
• A8:A1:59A8:A1:59:00:00:00 – A8:A1:59:FF:FF:FF
• BC:5F:F4BC:5F:F4:00:00:00 – BC:5F:F4:FF:FF:FF
• D0:50:99D0:50:99:00:00:00 – D0:50:99: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.