Union Pacific Railroad

Any device whose MAC address begins with 44:F8:49 has a network interface built by Union Pacific Railroad. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

44:F8:49

Organization

Union Pacific Railroad

Address

1400 Douglas St. STOP 0610 Omaha NE US 68179

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.