Pleneo

Any device whose MAC address begins with 5C:E1:A4 has a network interface built by Pleneo. 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:E1:A4

Organization

Pleneo

Address

9 RAFFLES PLACE #29-05 REPUBLIC PLAZA SG SG 00000

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.