Atmark Techno, Inc.

Any device whose MAC address begins with 00:11:0C has a network interface built by Atmark Techno, 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

00:11:0C

Organization

Atmark Techno, Inc.

Address

2F SD BLDG, 2-2-3-14 Atsubetsu-nishi, Atsubetsu-ku Sapporo Hokkaido JP 004-0062

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.