TOP WING Corporation

Any device whose MAC address begins with 14:81:21 has a network interface built by TOP WING Corporation. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

14:81:21

Organization

TOP WING Corporation

Address

1-10-2-1102 Sakae-cho Higashimurayama Tokyo JP 189-0013

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.