eSang Technologies Co., Ltd.

Any device whose MAC address begins with 00:22:1F has a network interface built by eSang Technologies 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

00:22:1F

Organization

eSang Technologies Co., Ltd.

Address

#1-817, IT Castle 550-1, Gasan-Dong, Seoul KR 153-768

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.