Siemens AG, Transportation Systems

Any device whose MAC address begins with 00:19:28 has a network interface built by Siemens AG, Transportation Systems. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:19:28

Organization

Siemens AG, Transportation Systems

Address

Ackerstraße 22 Braunschweig DE 38126

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.