STA Infinity LLP

Any device whose MAC address begins with A4:05:9E has a network interface built by STA Infinity LLP. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

A4:05:9E

Organization

STA Infinity LLP

Address

WINNINGTON HOUSE London GB N12 0DR

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.