Seyond

Any device whose MAC address begins with 64:D3:63 has a network interface built by Seyond. 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:D3:63

Organization

Seyond

Address

160 San Gabriel Dr Sunnyvale CA US 94086

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.