RingCube Technologies, Inc.

Any device whose MAC address begins with 00:25:4A has a network interface built by RingCube Technologies, 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

00:25:4A

Organization

RingCube Technologies, Inc.

Address

100 West Evelyn Ave, Suite 210 Mountain View CA US 94041

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.