Ventia Utility Services

Any device whose MAC address begins with C4:D1:97 has a network interface built by Ventia Utility Services. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

C4:D1:97

Organization

Ventia Utility Services

Address

Level 4, Tower 1, 495 Victoria Avenue Chatswood NSW AU 2067

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.