IEEE 1394c

Any device whose MAC address begins with 00:19:0D has a network interface built by IEEE 1394c. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:19:0D

Organization

IEEE 1394c

Address

c/o 1394 Trade Association Southlake TX US 76092

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.