Ransnet Singapore Pte Ltd

Any device whose MAC address begins with 3C:80:AA has a network interface built by Ransnet Singapore Pte Ltd. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

3C:80:AA

Organization

Ransnet Singapore Pte Ltd

Address

114, Lavender Street, #08-83, CT Hub 2 Singapore Singapore SG 338729

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.