CONNECTION MACHINES SERVICES

Any device whose MAC address begins with 00:40:54 has a network interface built by CONNECTION MACHINES SERVICES. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:40:54

Organization

CONNECTION MACHINES SERVICES

Address

12 HENSHAW STREET WOBURN MA US 01801-466664

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.