PT. Emsonic Indonesia

Any device whose MAC address begins with C4:23:A2 has a network interface built by PT. Emsonic Indonesia. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:23:A2

Organization

PT. Emsonic Indonesia

Address

Jl.Timor Blok E5, MM2100 Industrial Town Jatiwangi Cikarang Barat Bekasi Jawa Barat ID 17530

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.