Hefcom Metering (Pty) Ltd

Any device whose MAC address begins with AC:CB:09 has a network interface built by Hefcom Metering (Pty) 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

AC:CB:09

Organization

Hefcom Metering (Pty) Ltd

Address

PO Box 10770 Centurion Gauteng ZA 0046

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.