GN&S company

Any device whose MAC address begins with 00:0F:F5 has a network interface built by GN&S company. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:0F:F5

Organization

GN&S company

Address

301 Ansan S/W center, 643-7 wongok-dong Ansan city Gyeonggi-do KR 425-130

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.