Tri-Tech Manufacturing, Inc.

Any device whose MAC address begins with 84:3F:4E has a network interface built by Tri-Tech Manufacturing, 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

84:3F:4E

Organization

Tri-Tech Manufacturing, Inc.

Address

333 Turbine Drive Rapid City SD US 57703

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.