PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH

Any device whose MAC address begins with A4:B8:18 has a network interface built by PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:B8:18

Organization

PENTA Gesellschaft für elektronische Industriedatenverarbeitung mbH

Address

Ulrichsberger Str. 17 Deggendorf DE 94469

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.