EFS sas

Any device whose MAC address begins with 00:15:13 has a network interface built by EFS sas. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:15:13

Organization

EFS sas

Address

BP 34 MILLERY US F-69390

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.