BuildJet, Inc.

Any device whose MAC address begins with 30:52:53 has a network interface built by BuildJet, 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

30:52:53

Organization

BuildJet, Inc.

Address

8 The Green, Suite# 13184 Dover DE US 19901

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.