Compass-EOS

Any device whose MAC address begins with 40:12:E4 has a network interface built by Compass-EOS. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:12:E4

Organization

Compass-EOS

Address

7 Giborei Israel Natanya IL 42504

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.