CHECKOUT COMPUTER SYSTEMS, LTD

Any device whose MAC address begins with 00:30:25 has a network interface built by CHECKOUT COMPUTER SYSTEMS, 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

00:30:25

Organization

CHECKOUT COMPUTER SYSTEMS, LTD

Address

TOWNSEND FARM ROAD UNITED GB KINGDOM

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.