LEETEK

Any device whose MAC address begins with 28:F4:9B has a network interface built by LEETEK. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

28:F4:9B

Organization

LEETEK

Address

Ojeong-ro, 47 Bucheon-si Gyeonggi-do KR 14445

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.