IBR COMPUTER TECHNIK GMBH

Any device whose MAC address begins with 00:40:FC has a network interface built by IBR COMPUTER TECHNIK GMBH. 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:FC

Organization

IBR COMPUTER TECHNIK GMBH

Address

FRANKFURTER STR. 114 WEST DE

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.