CoreTrust Inc.

Any device whose MAC address begins with 18:84:10 has a network interface built by CoreTrust Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

18:84:10

Organization

CoreTrust Inc.

Address

14F Saman Bldg. 945 Daechi-dong Seoul Republic of Korea KR 135-280

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.