Quantumsolution

Any device whose MAC address begins with 78:11:00 has a network interface built by Quantumsolution. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

78:11:00

Organization

Quantumsolution

Address

Rm 903, STX V-Tower, 128, Gasandigital 1-ro, Geumcheon-gu Seoul KR 08507

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.