Hyundai Telecom

Any device whose MAC address begins with 00:1D:66 has a network interface built by Hyundai Telecom. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:1D:66

Organization

Hyundai Telecom

Address

Hyundai Telecom Bldg., 4273-12, Shingil-Dong, Youngdungpo-Gu, Seoul KR 150-859

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.