Finnzymes

Any device whose MAC address begins with 00:19:FF has a network interface built by Finnzymes. 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:FF

Organization

Finnzymes

Address

800 West Cummings Park Woburn MA US 01801

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.