Fujitsu Siemens Computers

Any device whose MAC address begins with 00:30:05 has a network interface built by Fujitsu Siemens Computers. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:30:05

Organization

Fujitsu Siemens Computers

Address

Buergermeister ulrich 100 86199 Augsburg 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.