Controlled Electronic Manageme

Any device whose MAC address begins with 00:30:46 has a network interface built by Controlled Electronic Manageme. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:30:46

Organization

Controlled Electronic Manageme

Address

Unit 4 Ravenhill Business Park Belfast IE

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.