SMT&C Co., Ltd.

Any device whose MAC address begins with 00:22:31 has a network interface built by SMT&C Co., 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

00:22:31

Organization

SMT&C Co., Ltd.

Address

2Fr. Haksan Bldg. 110, Gwangjang-dong, Gwangjin-gu Seoul KR 143-802

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.