GOLDSTAR INFORMATION & COMM.

Any device whose MAC address begins with 00:40:5A has a network interface built by GOLDSTAR INFORMATION & COMM.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:40:5A

Organization

GOLDSTAR INFORMATION & COMM.

Address

533, HOGAE-DONG, ANYANG-SHI KR KOREA

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.