Schneider Electric Japan Holdings Ltd.

Any device whose MAC address begins with 00:01:23 has a network interface built by Schneider Electric Japan Holdings Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:01:23

Organization

Schneider Electric Japan Holdings Ltd.

Address

Schneider Electric Osaka Building 4-4-9 Kitahama Chuo-ku, Osaka JP 541-0041

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.