Sunnovo International Limited

Any device whose MAC address begins with 20:4B:22 has a network interface built by Sunnovo International Limited. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

20:4B:22

Organization

Sunnovo International Limited

Address

1717 Haitai Building Beijing Beijing CN 100083

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.