Rackspace US, Inc.

Any device whose MAC address begins with BC:76:4E has a network interface built by Rackspace US, 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

BC:76:4E

Organization

Rackspace US, Inc.

Address

5000 Walzem Rd. San Antonio TX US 78218

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.