2wcom Systems GmbH

Any device whose MAC address begins with 00:11:99 has a network interface built by 2wcom Systems 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

00:11:99

Organization

2wcom Systems GmbH

Address

Am Sophienhof 8 Flensburg DE 24941

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.