EFM Networks

Any device whose MAC address begins with B0:38:6C has a network interface built by EFM Networks. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

B0:38:6C

Organization

EFM Networks

Address

6th Floor, Benposra II B/D 15, Jukjeon-ro, Giheung-gu Yongin-si Kyunggi-do KR 16897

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.