C8 MediSensors, Inc.

Any device whose MAC address begins with 28:40:1A has a network interface built by C8 MediSensors, 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

28:40:1A

Organization

C8 MediSensors, Inc.

Address

727 University Ave Los Gatos CA US 95032

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.