MARNER INTERNATIONAL, INC.

Any device whose MAC address begins with 00:40:E1 has a network interface built by MARNER INTERNATIONAL, INC.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:40:E1

Organization

MARNER INTERNATIONAL, INC.

Address

1617 93RD LANE NE BLAINE MN US 55449

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.