Shenzhen Siera Technology Ltd

Any device whose MAC address begins with 64:73:66 has a network interface built by Shenzhen Siera Technology Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

64:73:66

Organization

Shenzhen Siera Technology Ltd

Address

Room 2039, Shenhai Building, Wanzhong Village, Bulong Road, Minzhi, Longhua district, City: Shenzhen Shenzhen Guangdong CN 518131

Source

IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.