PAX Computer Technology(Shenzhen) Ltd.

Any device whose MAC address begins with 54:81:2D has a network interface built by PAX Computer Technology(Shenzhen) Ltd.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

54:81:2D

Organization

PAX Computer Technology(Shenzhen) Ltd.

Address

4/F, No.3 Building, Software Park, Second Central Science-Tech Road, High-Tech Shenzhen GuangDong CN 518057

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.