Cloud Engines, Inc.

Any device whose MAC address begins with 00:25:31 has a network interface built by Cloud Engines, 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

00:25:31

Organization

Cloud Engines, Inc.

Address

857 Montgomery Street San Francisco CA US 94133

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.