DIGITAL PRODUCTS, INC.

Any device whose MAC address begins with 00:40:AF has a network interface built by DIGITAL PRODUCTS, 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:AF

Organization

DIGITAL PRODUCTS, INC.

Address

411 WAVERLY OAKS ROAD WALTHAM MA US 02154

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.