Chiun Mai Communication System, Inc

Any device whose MAC address begins with 5C:57:9E has a network interface built by Chiun Mai Communication System, Inc. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

5C:57:9E

Organization

Chiun Mai Communication System, Inc

Address

No.4, MingSheng St. TUCheng District New Taipei City, 23679 TW New Taipei City TW 23679

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.