ARIMA Communications Corp.

Any device whose MAC address begins with 40:BA:61 has a network interface built by ARIMA Communications Corp.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

40:BA:61

Organization

ARIMA Communications Corp.

Address

6F., No.866, Jhongjheng Rd., Jhonghe Dist. New Taipei City TW 23586

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.