The Boeing Company

Any device whose MAC address begins with 34:61:78 has a network interface built by The Boeing Company. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

34:61:78

Organization

The Boeing Company

Address

325 James S. McDonnell Blvd Hazelwood MO US 63042-2513

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.