Data Comm for Business, Inc.

Any device whose MAC address begins with 00:09:AA has a network interface built by Data Comm for Business, Inc.. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address.

OUI prefix

00:09:AA

Organization

Data Comm for Business, Inc.

Address

2949 County Road 1000 East Dewey IL US 61853

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.