a2i marketing center

Any device whose MAC address begins with 00:12:41 has a network interface built by a2i marketing center. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:12:41

Organization

a2i marketing center

Address

1024-4 Duksan Bldg Bangbaedong Seochogu Seoul Korea SEOUL KR 137-060

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.